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Subject: Does it feel like the mid 10s yet?
Written By: QuddusFromMtv2 on 05/20/14 at 11:48 am
Every decade the mid part of it has this like warm feeling to it.
Does it feel like the mid of the decade yet? Usually by this time the zeitgeist is in full effect.
Subject: Re: Does it feel like the mid 10s yet?
Written By: Philip Eno on 05/20/14 at 12:54 pm
When I look at this year's calendar I see that we are now in the month of May in 2004, and yes that is mid 10s to me.
Sorry, you can't repeat a fudge action without waiting 24 hours.
Subject: Re: Does it feel like the mid 10s yet?
Written By: whistledog on 05/20/14 at 4:33 pm
I don't even know what zeitgeist means. I had to look it up. These newbies come in talking about years and using fancy words, I just do not understand it.
Every decade the mid part of it has this like warm feeling to it.
If the mid part of a decade gives you a warm feeling, I'd hate to think what a woman does to you. Yes, I said woman. I'll wait while you look that word up
Subject: Re: Does it feel like the mid 10s yet?
Written By: Inertia on 05/20/14 at 5:07 pm
::)
Is it your goal to post something vapid daily?
Subject: Re: Does it feel like the mid 10s yet?
Written By: LyricBoy on 05/20/14 at 5:44 pm
The end of the year will be the mid point, so let's for now enjoy the zeitgeist of the early 10's. 8)
Subject: Re: Does it feel like the mid 10s yet?
Written By: KatanaChick on 05/20/14 at 6:48 pm
It is the mid 10s and definately doesn't feel like last decade. It's definately it's own thing by now, so yes.
Subject: Re: Does it feel like the mid 10s yet?
Written By: LyricBoy on 05/20/14 at 6:51 pm
It is the mid 10s and definately doesn't feel like last decade. It's definately it's own thing by now, so yes.
Yeah, the 00's are like so 5 years ago.
Subject: Re: Does it feel like the mid 10s yet?
Written By: Jessica on 05/20/14 at 6:58 pm
A BRIEF HISTORY OF THE CHEVROLET SMALL-BLOCK V-8.
Chevrolet's small-block V8 is a famous automobile engine. Nicknamed "mouse motor" (opposed to the big block engine, nicknamed "rat") for its compact dimensions compared to other V8 engines of the time, production began in 1955 with the 265 engine. By 1957 it had grown to 283 cu in (4.6 L), and with the optional Rochester mechanical fuel injection, it became one of the first production engines ever to make one horsepower per cubic inch. This engine was used to power the Corvette, and the Bel Air at that time. It would later be extended to other vehicles as well, and replace the old style 265 V8s. The displacement changed over the years, eventually reaching 400 cu in (6.6 L), but none caught on like the 350 cu in (5.7 L) small-block. This engine is still in production today at General Motors Toluca, Mexico plant (primarily for the GM over-the-counter Goodwrench powerplants), but is no longer offered in current model year vehicles since the year 2004. Its production numbers were impressive, with more than 90,000,000 built. It has been produced in carbureted, mechanical fuel injection, and electronic fuel injection forms.
From 1955-74, the small-block engine was known as the "Turbo-Fire V8".
Although Buick, Cadillac, Oldsmobile, and Pontiac also designed V8 engines (see list of GM engines), it was Chevrolet's 350 cu in (5.7 L) small-block that became the GM corporate standard. Over the years, every American General Motors division except Saturn used the Chevrolet small-block, and its descendants (see GM LT engine and GM LS engine) continue as the company's mainstream V8 design today.
The small-block was on the Ward's 10 Best Engines of the 20th Century list.
Chevrolet tested the small-block twice with no water and no oil at wide-open throttle. The first time it lasted an hour and 15 minutes and the second time it lasted two hours.
Major Versions
Generation 1
The original design of the small block remained remarkably unchanged for its production run, which began in 1955 and ended, in passenger vehicles, in 2003. The engine is still being built today for many aftermarket applications, both to replace worn-out older engines and also by many builders as high-performance applications. There were, however many minor changes made to the engine over the years; these changes are listed below.
* 1955 - The first year of introduction in 265 cu in (4.3 L) only. As was fairly common for the time, no provision for an oil filter was included in the engine design.
* 1956 - Oil filtration was introduced, using a sock style filter in a canister.
* 1957 - The engine came with only front mounts, the side mount bosses were present but not drilled and tapped leaving its retrofitting problematic.
* 1962 - The block's cylinder wall casting was revised to allow four inch bores. Previously, only certain years of the 283 engine (1958-1962) could be bored safely to four inches.
* 1968 - The main journal diameter was increased to 2.45 in from 2.30 in and the connecting rod journal diameter was increased to 2.10 in from 2.00 in. This allowed the use of cast iron crankshafts as the previous parts were made of forged steel. The rod bolts were changed from 11/32 in. diameter to 3/8 inch. Additionally, the canister/sock style oil filter was now converted to use spin on filters. The oil fill location was moved from a tube on the front of the intake manifold to a cap on either side valve cover.
* 1987 - The valve cover surfaces were changed such that cylinder head mounting lip was raised and the bolt location was moved from 4 bolts on the perimeter, to 4 bolts down the centerline of the valve cover (this design debuted on the Corvette in 1985, and Chevrolet 4.3 L the year before). The rear main seal was changed from a 2-piece rubber design to a 1-piece rubber design that used a mounting appliance to hold it in place. This necessitated a change in the flywheel/flexplate bolt pattern as well. Also changed were the mounting angles of the center 2 bolts on each side of the intake manifold (from 90 degrees to 73 degrees) and the lifter bosses were increased in height to accept roller lifters. The alloy heads for use in the Corvette still retain the non-angled bolts (center 2 bolts attaching to the intake). Also all carburetors were done away with and replaced by TBI (throttle-body injection) fuel injection that acts some what like a carburetor.
* 1996 - This was the last change for the Generation I engine, and continued through the end of the production run in 2003; all 1997-2003 Generation I engines were Vortec truck engines. The cylinder heads were redesigned using improved ports and combustion chambers similar to those in the Generation II LT1. This change resulted in significant power increases.
SB2 and SB2.2
(Small Block/second generation) This engine was produced from 1996 to the present for racing applications only. The cylinder heads were redesigned and the lifter bores were offset. The valve sequence for each head was changed from the traditional E-I-I-E-E-I-I-E to a new I-E-I-E-E-I-E-I and because of this the camshaft was redesigned.
Generation II
LT1 from a 1993 Chevrolet Camaro Z28
See the GM LT engine page for more information on the Generation II small-block V8s, which differ mainly in their reverse-flow cooling system.
Generation III / IV
LS1 from a 1998 Chevrolet Camaro Z28
See the GM LS engine page for more information on the current family of General Motors small-block V8s.
Early Small Blocks
The first small block Chevrolet V-8 was a 265 cu in (4.3 L) engine that was developed in 1955 for the Corvette. Displacement and power eventually reached 327 cu in (5.4 L) and 375 hp (280 kW) (in prototypes) before the Corvette switched to Chevrolet big-block power. Although less powerful than big blocks, small block engines have remained popular due to their lower cost (including the cost of performance add-ons) and solid performance and reliability.
265
The 265 cu in (4.3 L) V8 was the first Chevrolet small block. Designed by Ed Cole's group at Chevrolet, it filled the power gap in the 1955 Corvette lineup, producing an impressive 250 hp (186 kW). The little engine went from drawings to production in just 15 weeks. Besides its compact dimensions, the small-block was known for its novel green-sand foundry construction process.
Dimensions were oversquare - 3.75 in (95 mm) bore and 3 in (76 mm) stroke. The small-block's 4.4 in (111.8 mm) bore spacing would continue in use for decades. It was a pushrod cast-iron engine with hydraulic lifters and a 2-barrel or 4-barrel Rochester carburetor. The 1955 conventional passenger car version produced 162 hp (121 kW) with a 2-barrel carburetor, or could be upgraded at extra cost to a "Power Pack" version conservatively rated at 180 hp (134 kW) with a four-barrel Rochester and dual exhaust. The first production year of this engine had no provision for oil filtration built into the block; however, an add-on filter mounted on the thermostat housing was installed during production. Due to the lack of adequate oil filtration provisions, the '55 model year block is typically only desirable to period collectors.
The 1956 Corvette introduced three versions of this engine - 210 hp (157 kW), 225 hp (168 kW) with twin 4-barrel carbs, and 240 hp (179 kW) with a high-lift cam.
* 1955, 1956 Chevrolet Corvette
* 1955 Chevrolet, 165 hp (123 kW) (2-barrel) and 195 hp (145 kW) (4-barrel)
283
The 283 cu in (4.6 L) V8 was introduced in 1957. It was a version of the 265 cu in (4.3 L) with a larger bore at 3.87 in (98 mm). There were five different versions ranging from 185 hp (138 kW) to 283 hp (211 kW) depending on whether a single carb, twin carbs, or fuel injection was used. Power was up a bit each year for 1958, 1959, and 1960.
The 1957 engine featured Ramjet mechanical fuel injection, allowing the engine to produce 1 hp (1 kW) per cubic inch, an impressive feat at the time. For 1961, an amazing 315 hp (235 kW) was available from this unit.
* 1957-1962 Chevrolet Corvette
302
Chevrolet produced a special 302 cu in (4.9 L) engine for Trans Am racing from 1967-1969. It was the product of placing the 3-inch stroke crankshaft from a 283 into a 4-inch bore 327 block. This engine was mostly used in the first-generation Camaro Z28. Just over 100 DZ block 302 engines were used in the, unique to South Africa, Chevrolet Firenza Can Am. Conservatively rated at 290 hp (216 kW), actual output was around 360 hp (268 kW). This block is one of 3 displacements that underwent a transformation for the 1968/1969 period when the main bearing size was increased from 2.30 in to 2.45 in.
307
A 307 cu in (5 L) version was produced from 1968 through 1973. Engine bore was 3.875 inches (98.4 mm) with a 3.25-inch (82.6 mm) stroke.
The 307 replaced the 283 in Chevrolet cars and produced 200 hp (149 kW) SAE gross at 4600 rpm and 300 lb·ft (407 N·m) of torque at 2400 rpm in the 1960s. The later emissions-modified versions produced just 115 hp (86 kW) SAE net, giving the engine one of the lowest power-per-displacement ratings of all time. Chevrolet never produced a high-performance version of this engine, though they did produce, for Outboard Marine Corporation, a high-performance marinized 307, rated at 235 hp (175 kW) and 245 hp (183 kW) SAE gross, depending on year, that shipped with the Corvette/Z-28's cast aluminum valve covers and Rochester QuadraJet carb. Chevy also built other versions of the OMC 307 rated at 210 hp (157 kW), 215 hp (160 kW) and 225 hp (168 kW) SAE gross.
One of the biggest myths about the 307 is that all the blocks were cast with a very low nickel content. However, some 307 blocks, such as casting number 3970020 with suffix VxxxxTHA (x's in place for date), had 010 and 020 stamped under the timing chain cover indicating high tin and nickel content.
327
The 327 cu in (5.4 L) V8, introduced in 1962, had a bore and stroke of 4 in (102 mm) by 3.25 in. Power ranged from 250 hp (186 kW) to 375 hp (280 kW) depending on the choice of carburetor or fuel injection, camshaft, cylinder heads, pistons and intake manifold. In 1962, the Duntov solid lifter cam versions produced 340 hp (254 kW), 344 lb·ft (466 N·m) with single Carter 4-brl, and 360 hp (268 kW), 352 lb·ft (477 N·m) with Rochester mechanical fuel injection. In 1964, horsepower increased to 365 hp (272 kW) for the now dubbed L79 version, and 375 hp (280 kW) for the fuel injected L84 respectively, making the L84 the most powerful naturally aspirated, single-cam, production small block V8 until the appearance of the 385 hp (287 kW), 385 lb·ft (522 N·m) Generation III LS6 in 2001. * L79, L84 1963-1965; Chevrolet Corvette. This block is one of three displacements that under went a major change in 1968/1969 when the main bearing size was increased from 2.30 to 2.4 inches (58.4–61.0 mm). In 1965 the SS malibu choice of the 327/350 hp know as the "L79", with a aluminum manifold, holley squarebore carb, chrome valve covers, a huge 8" balancer, huge 2.02" intake valves and could only be ordered with a 4 speed trans.
400
A 400 cu in (6.6 L) small-block was introduced in 1970 and produced for 10 years. It had a 4.125-inch (104.8 mm) bore and a 3.75-inch (95.3 mm) stroke. Initial output was 265 hp (198 kW) and was only available equipped with a 2-barrel carburetor. In 1974 a 4-barrel version of the 400 was introduced,while the 2-barrel version stopped production in 1975. 1976 was the last year that the 400 was used in a Chevrolet Passenger car, available in both the A-Body and B-Body line. While popular with circle-track racers, the engine was prone to cooling troubles if cylinder heads without steam holes were used. they mostly put out 250 hp stock.
Later Small Blocks
This section documents the odd-size small blocks developed after the 350 appeared in 1969. Many of these basic blocks are variations of the 350 design.
262
The 262 was a 262 cu in (4.3 L) 90° pushrod V8 with an iron block and heads. Bore and stroke were 3.67 in (93 mm) by 3.10 in (78.7 mm). Power output for 1975 was 110 hp (82 kW) and 195 lb·ft (264 N·m). The 262 was underpowered and was replaced by the 305 the following year.
This was Chevrolet's second 4.3 L-displacement powerplant; two other Chevrolet engines displaced 4.3 L: the Vortec 4300 (based on the Chevrolet 350, with two cylinders removed), and a derivative of the LT1 known as the L99 (using the 305's 3.736-inch bore, 5.94-inch connecting rods, and a 3-inch crankshaft stroke).
This engine was used in the following cars:
* 1975-1976 Chevrolet Monza
* 1975 Chevrolet Nova
267
The 267 was introduced in 1979 for GM F-Body(Camaro), G-bodies (Chevrolet Monte Carlo, El Camino, and Malibu Classic) and also used on GM B-body cars (Impala and Caprice models). The 267 cu in (4.4 L) had the 350's crankshaft stroke of 3.48" and the smallest bore of any small-block, 3.500 in. The 3.500" bore was also used on the 200 cu in (3.3 L) V6, which was introduced a year earlier. (The 200 was a Chevrolet V6 engine based on the small block with the #3 and #6 cylinders removed).
It was available with a Rochester Dualjet 210 - effectively a Rochester Quadrajet with no rear barrels. After 1980, electronic feedback carburetion was used on the 267.
While similar in displacement to the other 4.3-4.4 L V8 engines produced by General Motors (including the Oldsmobile 260 and Pontiac 265, the small bore 267 shared no parts with the other engines and was phased out after the 1982 model year due to inability to conform to emission standards. Chevrolet vehicles eventually used the 305 cu in (5 L) as its base V8 engine.
305
The 305 variant of the small-block Chevrolet had a displacement of 305 cu in (5 L) with a 3.736-inch (95 mm) bore and 3.48-inch (88.4 mm) stroke. The 262 was considered underpowered for use in vehicles with a wheelbase greater than 110 inches, so GM engineers decided to increase the bore diameter from 3.671 to 3.736 inches (93.2–94.9 mm) and increase the stroke from 3.10 to 3.48 inches (78.7–88.4 mm) (from the 350). Some performance enthusiasts have noted a marked resistance to performance upgrades on the 305 because of its small bore, poor selection of aftermarket cylinder heads, and the relatively high availability of 350 cu in (5.7 L) engines.
Induction systems for the 305 included carburetors (both 2 and 4-barrel), throttle-body injection (TBI), tuned-port fuel injection (TPI), and sequential fuel injection (GM Vortec).
After 1996, its usage was limited to light trucks and SUVs as the Vortec 5000.
Year hp (kW) lb·ft (N·m)
1976 140 250 w/2bbl.
1977 145 245 w/2bbl.
1978 140 240 w/2bbl.
1978 160 235 w/4bbl.
1979 130 245 w/2bbl.
1979† 125 235 w/2bbl.
1980 155 240 w/4bbl.
1981 150 240 w/4bbl
† California Emissions
The 305 was used in the following cars:
* 1977-1993 Chevrolet Caprice (includes Impala)
* 1977-1986 Pontiac Parisienne
* 1976-1979 Chevrolet Monza
* 1976-1979 Chevrolet Nova (also GM X-body clones after 1976)
* 1976-1992 Chevrolet Camaro
* 1976-1988 Chevrolet Malibu, Chevrolet El Camino, and Chevrolet Monte Carlo
* 1978-1992 Pontiac Firebird
* 1978-1980 Oldsmobile Cutlass (US Market only, Canadian market 1978-1987)
* 1991-1992 Oldsmobile Custom Cruiser
* 1981-1987 Pontiac Grand Prix
* 1975-1979 Buick Skylark
* 1977-2003 Chevrolet/GMC Trucks, SUVs, Vans
* 1991-1992 Cadillac Brougham
LG3
Years:1976-1980
Dualjet 2 bbl carb version with 8.5:1 compression.
LG4
Years: 1980-1987
The LG4 was the "low output" 305 cu in (5 L) (compared to the L69). It produced 150 hp (112 kW)-170 hp (127 kW) and 240 lb·ft (325 N·m)-250 lb·ft (339 N·m). The addition of a knock sensor for the engine management system in 1985 allowed an increase in compression and a more aggressive spark timing map in the ECM. As a result power increased for the 1985 models to 165 hp (123 kW) from the 150 hp (112 kW) rating in 1984.
L69
Years: 1983-1986
The L69 was the last true H.O. engine. The High Output 5 L (305 cu in) , featuring higher compression of 9.5:1 with heads of the to-be-discontinued LU5 Cross-Fire fuel injection engine, and utilizing camshaft and 4" catalytic converter of the 5.7 L (350 cu in) L83 which was used on the Corvette of 1982 and 1984. Complete with a 2.75 inch exhaust system, topped by a recalibrated 4-barrel carburetor, dual snorkel air cleaner assembly, aluminum intake manifold, aluminum flywheel, electric cooling fan, and furthermore a knock sensor including more aggressive spark timing, this engine produced 190 hp (142 kW) @ 4800 and 240 lb·ft (325 N·m) of torque @ 3200 rpm. In most cases, being mated to a 3.73 or 3:42 ratio limited slip rear axle and a T5 5-speed or 700R4 automatic, this engine provided its driver with a wide range of rpm to play in.
LE9
Years: 1981-1986
The LE9 5 L (305 cu in) was the truck/van version of the High Output 305. It also had flattop pistons for a 9.5:1 compression ratio, the "929" truck 350 camshaft for more torque, 14022601 casting heads featuring 1.84/1.50" valves and 53 cc chambers, a specially calibrated 4bbl Q-Jet, the hybrid centrifugal/vacuum advance distributor with ESC knock sensor setup, and lower restriction exhaust. The engine made 210 hp (157 kW) @ 4,600 and 250 lb·ft (339 N·m) @ 2,000 rpm.
L03
Years: 1987-95
The L03 was the "low output" 5 L (305 cu in) (compared to the 305 TPI LB9). It produced 170 hp (127 kW) and 255 lb·ft (346 N·m) of torque (190 hp (142 kW) at 4,400 rpm and 275 lb·ft (373 N·m) at 2,400 in 1993-1995 GM trucks). This engine used throttle-body fuel injection. The TBI uses a unique injector firing scheme, for every rotation of the engine, each injector fired twice.
LB9
Years: 1985-1992
Introduced in 1985, the LB9 was the first Chevrolet small block to have tuned-port fuel injection (TPI). It was introduced with 215 hp (160 kW) and 275 lb·ft (373 N·m) and varied between 190 hp (142 kW)-230 hp (172 kW) (with 275 lb·ft (373 N·m)-300 lb·ft (407 N·m) of torque) over the years offered. It was an option on all 1985-1992 Chevrolet Camaro & Pontiac Firebird models.
350
Not to be confused with Buick V8 engine, Oldsmobile V8 engine, or Pontiac V8 engine.
The first generation of Chevrolet small-blocks began with the 1955 Chevrolet 265 cu in (4.3 L) V8. But it was the 350 cu in (5.7 L) series that came to be emblematic of the Chevrolet small block V8 engine. The engine's physical dimensions (oversquare 4.00-inch bore and 3.48-inch stroke, 102 mm by 88 mm) are nearly identical to the 400 hp (298 kW) LS2 engine of today, but much has changed. It is by far the most widely used Chevrolet small-block; it has been installed in everything from station wagons to sports cars, in commercial vehicles, and even in boats and (in highly modified form) airplanes.
First usage of the 350 was in the 1967 Chevrolet Camaro and 1968 Nova producing 295 horsepower (gross); other Chevrolet vehicle lines followed suit in the year 1969.
The GM Goodwrench 350 crate engine comes in several variations. The lowest priced uses the pre-1986 four-bolt casting molds with two dipstick locations; pre-1980 on the driver's side and post-1980 on the passenger's side. This engine was produced in Mexico since 1981 as the Targetmaster 350, and now the GM Goodwrench 350.
ZQ3
Years: 1969, 1970, 1972-1975
The ZQ3 was the standard engine in the 1969-1970 Chevrolet Corvette. It was a 300 hp (224 kW) version of the 350 cu in (5.7 L) small-block, with 10.25:1 compression and hydraulic lifters. It used a Rochester "4MV" Quadra-Jet 4-barrel carburetor. This was the first block produced that featured the larger 2.45 inch main bearing versus the older 2.30 inch main bearing in 1968/1969.
The 1969 ZQ3 produced 200 hp (149 kW) and 300 lb·ft (407 N·m) with 8.5:1 compression, dropping another 10 hp (7 kW) in 1973. 1975 saw the ZQ3 at 165 hp (123 kW) and 255 lb·ft (346 N·m).
L46
Years: 1969, 1970
The L46 was an optional engine on the 1969-1970 Chevrolet Corvette. It was a 350 hp (261 kW), 380 lb·ft (515 N·m) version of the ZQ3 with higher 11:1 compression.
LT-1
LT-1 from a 1970 Chevrolet Camaro Z28
Years: 1970-1972
The LT-1 was the ultimate 350 cu in (5.7 L) V8, becoming available in 1970. It used solid lifters, 11:1 compression, a high-performance camshaft, and a Holley four-barrel carburetor on a special aluminum intake to produce 370 hp (276 kW) and 380 lb·ft (515 N·m). It was available on the Corvette and Camaro Z28. Power was down in 1971 to 330 hp (246 kW) and 360 lb·ft (488 N·m) with 9:1 compression, and again in 1972 (the last year of the LT-1) to 255 hp (190 kW) and 280 lb·ft (380 N·m).
There was also a later small-block engine called the "LT1".
L48
Years: 1967-1980
The L-48 is the original 350 cu in (5.7 L), available only in the Camaro or Chevy II/Nova in '67 & '68. In '69 it was used in almost everything; Camaros, Corvettes, Impalas, Chevelles & Novas. From '75-'80 it was available only in the Corvette. L-48's use a Hyd Cam, 4bbl Qjet, Cast pistons, 2 bolt main caps, "Pink" Rods, #0014 Blocks & #993 heads. Power output ranges from 300HP(gross) down to 175HP(net).
The L48 was the standard engine in the 1971 Chevrolet Corvette. It produced 270 hp (201 kW) and 360 lb·ft (488 N·m) with an 8.5:1 compression ratio.
The 1976-1979 L48 was the standard Corvette engine and produced 180 hp (134 kW) and 270 lb·ft (366 N·m). The 1980 L48 stood at 190 hp (142 kW) and 280 lb·ft (380 N·m) from 8.2:1 compression.
In 1972 the only way to get a L48 (4bbl V8) in a Chevy Nova was to get the Super Sport Package. This is indicated by the 5th digit in the VIN being a "K". 1972 was the only year you could verify the Super Sport package by the VIN.
In 1973 the "L-48" had cold air induction (throttle activated) and developed 190 hp (142 kW) (net). Beginning in 1974 the hp was reduced for several years until it reached a low of 165 hp (123 kW) (net) in 1975, before rising again.
L82
Years: 1973-1980
The 1973-1974 L82 was a "performance" version of the 350 producing 250 hp (186 kW) and 285 lb·ft (386 N·m) from 9:1 compression. It was down to 205 hp (153 kW) and 255 lb·ft (346 N·m) for 1975. It was the optional engine again in 1976-1977, producing 5 hp (4 kW) more. The 1978 L82 recovered somewhat, producing 220 hp (164 kW) and 260 lb·ft (353 N·m), and then 5 hp (4 kW) and 10 lb·ft (14 N·m) more for 1979. 1980 saw yet another 10 hp (7 kW) and 15 lb·ft (20 N·m).
L81
Years: 1981
The L81 was the only 5.7 L (350 cu in) Corvette engine for 1981. It produced 190 hp (142 kW) and 280 lb·ft (380 N·m) from 8.2:1 compression, exactly the same as the 1980 L48, but added computer control spark advance, replacing the vacuum advance.
L83
Years: 1982, 1984
The 1982 L83 was again the only Corvette engine (and only available with an automatic transmission) producing 200 hp (149 kW) and 285 lb·ft (386 N·m) from 9:1 compression. This was again the only engine on the new 1984 Vette, at 205 hp (153 kW) and 290 lb·ft (393 N·m). The L83 added Cross-Fire fuel injection (twin throttle-body fuel injection).
L98
For the new Generation IV V8, see GM L98.
Years: 1985-1992
The new 1985 L98 added tuned-port fuel injection "TPI", which produced 230 hp (172 kW) and 330 lb·ft (447 N·m). It was standard on all 1985-1991 Corvettes (rated at 230 hp (172 kW)-250 hp (186 kW) and 330 lb·ft (447 N·m)-350 lb·ft (475 N·m)). Optional on 87-92 Chevrolet Camaro & Pontiac Firebird models (rated at 225 hp (168 kW)-245 hp (183 kW) and 330 lb·ft (447 N·m)-345 lb·ft (468 N·m)) 1987 versions had 10 hp (7 kW) and 15 lb·ft (20 N·m) more thanks to 9.5:1 compression. Compression was up again in 1991 to 10:1 but output stayed the same.
LM1
The LM1 is the base 5.7 L (350 cu in) with a 4-barrel carburetor (usually with a Rochester Quadrajet) in passenger cars until 1988. Throughout its lifespan, it received either a points, electronic, and/or computer-controlled spark system, to conventional and feedback carburetors.
LM1s were superseded with the LO5 powerplant after 1988.
L05
The L05 was introduced in 1987 for use in Chevrolet/GMC trucks in both the GMT400 (introduced in April 1987 as 1988 models) and the R/V series trucks such as the K5 Blazer, Suburban, and rounded-era pickups formerly classed as the C/K until 1996 which includes chassis cabs and 4-door crew cabs. Although usage was for trucks, vans, and 9C1-optioned Caprices, the L05 was also used with the following vehicles:
* 1992/1993 Buick Roadmaster sedan and station wagon
* 1991/1992 Cadillac Brougham (optional engine)
* 1993 Cadillac Fleetwood
* 1992/1993 Chevrolet Caprice Wagon (optional engine)
* 1993 Chevrolet Caprice LTZ
* 1992 Oldsmobile Custom Cruiser Wagon (optional engine)
L05 usage was replaced by the GM LT1 after 1993 in GM B-Bodies until production ceased in 1996.
In mid 1996 the L05 was equipped with Vortec heads used in the 1996 G30.
L31
The L31 replaced the LO5 in 1996 - known as the Vortec 5700. Known as the GEN 1+, this was the final incarnation of the 1955-vintage small block, ending production in 2005 with the last vehicle being a Kodiak/Topkick HD truck. Volvo Penta and Mercury Marine still produces the L31. The "MARINE" intake is a potential upgrade for L31 trucks.
Subject: Re: Does it feel like the mid 10s yet?
Written By: LyricBoy on 05/20/14 at 7:05 pm
A BRIEF HISTORY OF THE CHEVROLET SMALL-BLOCK V-8.
Very thorough and informative post. If I may, could you offer your opinion....
Do you think the LM1 had the feel of the LG3, or was it more like the L69? ???
Subject: Re: Does it feel like the mid 10s yet?
Written By: Sita0 on 05/20/14 at 11:07 pm
It's the mid '10s.
It seems like this decade started just yesterday....
Subject: Re: Does it feel like the mid 10s yet?
Written By: Visor765 on 05/21/14 at 12:23 am
To the really long post about cars: okay, what was the point of that? Anyway, I feel like the zeitgeist of this decade started in 2008 or 2009. I think the 2010s started early, as by 2008, the iPhone was out, YouTube was huge, Electropop was in, such as Lady Gaga and Katy Perry. Skinny jeans, neon colors, asymmetrical haircuts, low-cut shirts. All of that stuff is still popular today. Just like how the 1950s started early.
Subject: Re: Does it feel like the mid 10s yet?
Written By: Inertia on 05/21/14 at 8:25 am
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Subject: Re: Does it feel like the mid 10s yet?
Written By: Paul on 05/21/14 at 8:55 am
I'm enjoying the zeitgeist of my zeitgeist...
Subject: Re: Does it feel like the mid 10s yet?
Written By: Philip Eno on 05/21/14 at 1:19 pm
To the really long post about cars: okay, what was the point of that? Anyway, I feel like the zeitgeist of this decade started in 2008 or 2009. I think the 2010s started early, as by 2008, the iPhone was out, YouTube was huge, Electropop was in, such as Lady Gaga and Katy Perry. Skinny jeans, neon colors, asymmetrical haircuts, low-cut shirts. All of that stuff is still popular today. Just like how the 1950s started early.
Definitely the 2010s decade started on January 1st 2010!
Subject: Re: Does it feel like the mid 10s yet?
Written By: Philip Eno on 05/21/14 at 1:19 pm
Definitely the 2010s decade started on January 1st 2010!
It says so on my calendar!
Subject: Re: Does it feel like the mid 10s yet?
Written By: Philip Eno on 05/21/14 at 1:31 pm
http://i.imgur.com/YdmGHYG.gifhttp://i.imgur.com/YdmGHYG.gifhttp://i.imgur.com/YdmGHYG.gifhttp://i.imgur.com/YdmGHYG.gifhttp://i.imgur.com/YdmGHYG.gifhttp://i.imgur.com/YdmGHYG.gifhttp://i.imgur.com/YdmGHYG.gifhttp://i.imgur.com/YdmGHYG.gifhttp://i.imgur.com/YdmGHYG.gifhttp://i.imgur.com/YdmGHYG.gif
If you are planning for a year, sow rice; if you are planning for a decade, plant trees; if you are planning for a lifetime, educate people.
Subject: Re: Does it feel like the mid 10s yet?
Written By: Visor765 on 05/21/14 at 4:32 pm
Definitely the 2010s decade started on January 1st 2010!
I'm not talking about the calendar 2010s you smart aleck.
Subject: Re: Does it feel like the mid 10s yet?
Written By: Jessica on 05/21/14 at 9:40 pm
A BRIEF HISTORY OF THE CHEVROLET SMALL-BLOCK V-8.
Chevrolet's small-block V8 is a famous automobile engine. Nicknamed "mouse motor" (opposed to the big block engine, nicknamed "rat") for its compact dimensions compared to other V8 engines of the time, production began in 1955 with the 265 engine. By 1957 it had grown to 283 cu in (4.6 L), and with the optional Rochester mechanical fuel injection, it became one of the first production engines ever to make one horsepower per cubic inch. This engine was used to power the Corvette, and the Bel Air at that time. It would later be extended to other vehicles as well, and replace the old style 265 V8s. The displacement changed over the years, eventually reaching 400 cu in (6.6 L), but none caught on like the 350 cu in (5.7 L) small-block. This engine is still in production today at General Motors Toluca, Mexico plant (primarily for the GM over-the-counter Goodwrench powerplants), but is no longer offered in current model year vehicles since the year 2004. Its production numbers were impressive, with more than 90,000,000 built. It has been produced in carbureted, mechanical fuel injection, and electronic fuel injection forms.
From 1955-74, the small-block engine was known as the "Turbo-Fire V8".
Although Buick, Cadillac, Oldsmobile, and Pontiac also designed V8 engines (see list of GM engines), it was Chevrolet's 350 cu in (5.7 L) small-block that became the GM corporate standard. Over the years, every American General Motors division except Saturn used the Chevrolet small-block, and its descendants (see GM LT engine and GM LS engine) continue as the company's mainstream V8 design today.
The small-block was on the Ward's 10 Best Engines of the 20th Century list.
Chevrolet tested the small-block twice with no water and no oil at wide-open throttle. The first time it lasted an hour and 15 minutes and the second time it lasted two hours.
Major Versions
Generation 1
The original design of the small block remained remarkably unchanged for its production run, which began in 1955 and ended, in passenger vehicles, in 2003. The engine is still being built today for many aftermarket applications, both to replace worn-out older engines and also by many builders as high-performance applications. There were, however many minor changes made to the engine over the years; these changes are listed below.
* 1955 - The first year of introduction in 265 cu in (4.3 L) only. As was fairly common for the time, no provision for an oil filter was included in the engine design.
* 1956 - Oil filtration was introduced, using a sock style filter in a canister.
* 1957 - The engine came with only front mounts, the side mount bosses were present but not drilled and tapped leaving its retrofitting problematic.
* 1962 - The block's cylinder wall casting was revised to allow four inch bores. Previously, only certain years of the 283 engine (1958-1962) could be bored safely to four inches.
* 1968 - The main journal diameter was increased to 2.45 in from 2.30 in and the connecting rod journal diameter was increased to 2.10 in from 2.00 in. This allowed the use of cast iron crankshafts as the previous parts were made of forged steel. The rod bolts were changed from 11/32 in. diameter to 3/8 inch. Additionally, the canister/sock style oil filter was now converted to use spin on filters. The oil fill location was moved from a tube on the front of the intake manifold to a cap on either side valve cover.
* 1987 - The valve cover surfaces were changed such that cylinder head mounting lip was raised and the bolt location was moved from 4 bolts on the perimeter, to 4 bolts down the centerline of the valve cover (this design debuted on the Corvette in 1985, and Chevrolet 4.3 L the year before). The rear main seal was changed from a 2-piece rubber design to a 1-piece rubber design that used a mounting appliance to hold it in place. This necessitated a change in the flywheel/flexplate bolt pattern as well. Also changed were the mounting angles of the center 2 bolts on each side of the intake manifold (from 90 degrees to 73 degrees) and the lifter bosses were increased in height to accept roller lifters. The alloy heads for use in the Corvette still retain the non-angled bolts (center 2 bolts attaching to the intake). Also all carburetors were done away with and replaced by TBI (throttle-body injection) fuel injection that acts some what like a carburetor.
* 1996 - This was the last change for the Generation I engine, and continued through the end of the production run in 2003; all 1997-2003 Generation I engines were Vortec truck engines. The cylinder heads were redesigned using improved ports and combustion chambers similar to those in the Generation II LT1. This change resulted in significant power increases.
SB2 and SB2.2
(Small Block/second generation) This engine was produced from 1996 to the present for racing applications only. The cylinder heads were redesigned and the lifter bores were offset. The valve sequence for each head was changed from the traditional E-I-I-E-E-I-I-E to a new I-E-I-E-E-I-E-I and because of this the camshaft was redesigned.
Generation II
LT1 from a 1993 Chevrolet Camaro Z28
See the GM LT engine page for more information on the Generation II small-block V8s, which differ mainly in their reverse-flow cooling system.
Generation III / IV
LS1 from a 1998 Chevrolet Camaro Z28
See the GM LS engine page for more information on the current family of General Motors small-block V8s.
Early Small Blocks
The first small block Chevrolet V-8 was a 265 cu in (4.3 L) engine that was developed in 1955 for the Corvette. Displacement and power eventually reached 327 cu in (5.4 L) and 375 hp (280 kW) (in prototypes) before the Corvette switched to Chevrolet big-block power. Although less powerful than big blocks, small block engines have remained popular due to their lower cost (including the cost of performance add-ons) and solid performance and reliability.
265
The 265 cu in (4.3 L) V8 was the first Chevrolet small block. Designed by Ed Cole's group at Chevrolet, it filled the power gap in the 1955 Corvette lineup, producing an impressive 250 hp (186 kW). The little engine went from drawings to production in just 15 weeks. Besides its compact dimensions, the small-block was known for its novel green-sand foundry construction process.
Dimensions were oversquare - 3.75 in (95 mm) bore and 3 in (76 mm) stroke. The small-block's 4.4 in (111.8 mm) bore spacing would continue in use for decades. It was a pushrod cast-iron engine with hydraulic lifters and a 2-barrel or 4-barrel Rochester carburetor. The 1955 conventional passenger car version produced 162 hp (121 kW) with a 2-barrel carburetor, or could be upgraded at extra cost to a "Power Pack" version conservatively rated at 180 hp (134 kW) with a four-barrel Rochester and dual exhaust. The first production year of this engine had no provision for oil filtration built into the block; however, an add-on filter mounted on the thermostat housing was installed during production. Due to the lack of adequate oil filtration provisions, the '55 model year block is typically only desirable to period collectors.
The 1956 Corvette introduced three versions of this engine - 210 hp (157 kW), 225 hp (168 kW) with twin 4-barrel carbs, and 240 hp (179 kW) with a high-lift cam.
* 1955, 1956 Chevrolet Corvette
* 1955 Chevrolet, 165 hp (123 kW) (2-barrel) and 195 hp (145 kW) (4-barrel)
283
The 283 cu in (4.6 L) V8 was introduced in 1957. It was a version of the 265 cu in (4.3 L) with a larger bore at 3.87 in (98 mm). There were five different versions ranging from 185 hp (138 kW) to 283 hp (211 kW) depending on whether a single carb, twin carbs, or fuel injection was used. Power was up a bit each year for 1958, 1959, and 1960.
The 1957 engine featured Ramjet mechanical fuel injection, allowing the engine to produce 1 hp (1 kW) per cubic inch, an impressive feat at the time. For 1961, an amazing 315 hp (235 kW) was available from this unit.
* 1957-1962 Chevrolet Corvette
302
Chevrolet produced a special 302 cu in (4.9 L) engine for Trans Am racing from 1967-1969. It was the product of placing the 3-inch stroke crankshaft from a 283 into a 4-inch bore 327 block. This engine was mostly used in the first-generation Camaro Z28. Just over 100 DZ block 302 engines were used in the, unique to South Africa, Chevrolet Firenza Can Am. Conservatively rated at 290 hp (216 kW), actual output was around 360 hp (268 kW). This block is one of 3 displacements that underwent a transformation for the 1968/1969 period when the main bearing size was increased from 2.30 in to 2.45 in.
307
A 307 cu in (5 L) version was produced from 1968 through 1973. Engine bore was 3.875 inches (98.4 mm) with a 3.25-inch (82.6 mm) stroke.
The 307 replaced the 283 in Chevrolet cars and produced 200 hp (149 kW) SAE gross at 4600 rpm and 300 lb·ft (407 N·m) of torque at 2400 rpm in the 1960s. The later emissions-modified versions produced just 115 hp (86 kW) SAE net, giving the engine one of the lowest power-per-displacement ratings of all time. Chevrolet never produced a high-performance version of this engine, though they did produce, for Outboard Marine Corporation, a high-performance marinized 307, rated at 235 hp (175 kW) and 245 hp (183 kW) SAE gross, depending on year, that shipped with the Corvette/Z-28's cast aluminum valve covers and Rochester QuadraJet carb. Chevy also built other versions of the OMC 307 rated at 210 hp (157 kW), 215 hp (160 kW) and 225 hp (168 kW) SAE gross.
One of the biggest myths about the 307 is that all the blocks were cast with a very low nickel content. However, some 307 blocks, such as casting number 3970020 with suffix VxxxxTHA (x's in place for date), had 010 and 020 stamped under the timing chain cover indicating high tin and nickel content.
327
The 327 cu in (5.4 L) V8, introduced in 1962, had a bore and stroke of 4 in (102 mm) by 3.25 in. Power ranged from 250 hp (186 kW) to 375 hp (280 kW) depending on the choice of carburetor or fuel injection, camshaft, cylinder heads, pistons and intake manifold. In 1962, the Duntov solid lifter cam versions produced 340 hp (254 kW), 344 lb·ft (466 N·m) with single Carter 4-brl, and 360 hp (268 kW), 352 lb·ft (477 N·m) with Rochester mechanical fuel injection. In 1964, horsepower increased to 365 hp (272 kW) for the now dubbed L79 version, and 375 hp (280 kW) for the fuel injected L84 respectively, making the L84 the most powerful naturally aspirated, single-cam, production small block V8 until the appearance of the 385 hp (287 kW), 385 lb·ft (522 N·m) Generation III LS6 in 2001. * L79, L84 1963-1965; Chevrolet Corvette. This block is one of three displacements that under went a major change in 1968/1969 when the main bearing size was increased from 2.30 to 2.4 inches (58.4–61.0 mm). In 1965 the SS malibu choice of the 327/350 hp know as the "L79", with a aluminum manifold, holley squarebore carb, chrome valve covers, a huge 8" balancer, huge 2.02" intake valves and could only be ordered with a 4 speed trans.
400
A 400 cu in (6.6 L) small-block was introduced in 1970 and produced for 10 years. It had a 4.125-inch (104.8 mm) bore and a 3.75-inch (95.3 mm) stroke. Initial output was 265 hp (198 kW) and was only available equipped with a 2-barrel carburetor. In 1974 a 4-barrel version of the 400 was introduced,while the 2-barrel version stopped production in 1975. 1976 was the last year that the 400 was used in a Chevrolet Passenger car, available in both the A-Body and B-Body line. While popular with circle-track racers, the engine was prone to cooling troubles if cylinder heads without steam holes were used. they mostly put out 250 hp stock.
Later Small Blocks
This section documents the odd-size small blocks developed after the 350 appeared in 1969. Many of these basic blocks are variations of the 350 design.
262
The 262 was a 262 cu in (4.3 L) 90° pushrod V8 with an iron block and heads. Bore and stroke were 3.67 in (93 mm) by 3.10 in (78.7 mm). Power output for 1975 was 110 hp (82 kW) and 195 lb·ft (264 N·m). The 262 was underpowered and was replaced by the 305 the following year.
This was Chevrolet's second 4.3 L-displacement powerplant; two other Chevrolet engines displaced 4.3 L: the Vortec 4300 (based on the Chevrolet 350, with two cylinders removed), and a derivative of the LT1 known as the L99 (using the 305's 3.736-inch bore, 5.94-inch connecting rods, and a 3-inch crankshaft stroke).
This engine was used in the following cars:
* 1975-1976 Chevrolet Monza
* 1975 Chevrolet Nova
267
The 267 was introduced in 1979 for GM F-Body(Camaro), G-bodies (Chevrolet Monte Carlo, El Camino, and Malibu Classic) and also used on GM B-body cars (Impala and Caprice models). The 267 cu in (4.4 L) had the 350's crankshaft stroke of 3.48" and the smallest bore of any small-block, 3.500 in. The 3.500" bore was also used on the 200 cu in (3.3 L) V6, which was introduced a year earlier. (The 200 was a Chevrolet V6 engine based on the small block with the #3 and #6 cylinders removed).
It was available with a Rochester Dualjet 210 - effectively a Rochester Quadrajet with no rear barrels. After 1980, electronic feedback carburetion was used on the 267.
While similar in displacement to the other 4.3-4.4 L V8 engines produced by General Motors (including the Oldsmobile 260 and Pontiac 265, the small bore 267 shared no parts with the other engines and was phased out after the 1982 model year due to inability to conform to emission standards. Chevrolet vehicles eventually used the 305 cu in (5 L) as its base V8 engine.
305
The 305 variant of the small-block Chevrolet had a displacement of 305 cu in (5 L) with a 3.736-inch (95 mm) bore and 3.48-inch (88.4 mm) stroke. The 262 was considered underpowered for use in vehicles with a wheelbase greater than 110 inches, so GM engineers decided to increase the bore diameter from 3.671 to 3.736 inches (93.2–94.9 mm) and increase the stroke from 3.10 to 3.48 inches (78.7–88.4 mm) (from the 350). Some performance enthusiasts have noted a marked resistance to performance upgrades on the 305 because of its small bore, poor selection of aftermarket cylinder heads, and the relatively high availability of 350 cu in (5.7 L) engines.
Induction systems for the 305 included carburetors (both 2 and 4-barrel), throttle-body injection (TBI), tuned-port fuel injection (TPI), and sequential fuel injection (GM Vortec).
After 1996, its usage was limited to light trucks and SUVs as the Vortec 5000.
Year hp (kW) lb·ft (N·m)
1976 140 250 w/2bbl.
1977 145 245 w/2bbl.
1978 140 240 w/2bbl.
1978 160 235 w/4bbl.
1979 130 245 w/2bbl.
1979† 125 235 w/2bbl.
1980 155 240 w/4bbl.
1981 150 240 w/4bbl
† California Emissions
The 305 was used in the following cars:
* 1977-1993 Chevrolet Caprice (includes Impala)
* 1977-1986 Pontiac Parisienne
* 1976-1979 Chevrolet Monza
* 1976-1979 Chevrolet Nova (also GM X-body clones after 1976)
* 1976-1992 Chevrolet Camaro
* 1976-1988 Chevrolet Malibu, Chevrolet El Camino, and Chevrolet Monte Carlo
* 1978-1992 Pontiac Firebird
* 1978-1980 Oldsmobile Cutlass (US Market only, Canadian market 1978-1987)
* 1991-1992 Oldsmobile Custom Cruiser
* 1981-1987 Pontiac Grand Prix
* 1975-1979 Buick Skylark
* 1977-2003 Chevrolet/GMC Trucks, SUVs, Vans
* 1991-1992 Cadillac Brougham
LG3
Years:1976-1980
Dualjet 2 bbl carb version with 8.5:1 compression.
LG4
Years: 1980-1987
The LG4 was the "low output" 305 cu in (5 L) (compared to the L69). It produced 150 hp (112 kW)-170 hp (127 kW) and 240 lb·ft (325 N·m)-250 lb·ft (339 N·m). The addition of a knock sensor for the engine management system in 1985 allowed an increase in compression and a more aggressive spark timing map in the ECM. As a result power increased for the 1985 models to 165 hp (123 kW) from the 150 hp (112 kW) rating in 1984.
L69
Years: 1983-1986
The L69 was the last true H.O. engine. The High Output 5 L (305 cu in) , featuring higher compression of 9.5:1 with heads of the to-be-discontinued LU5 Cross-Fire fuel injection engine, and utilizing camshaft and 4" catalytic converter of the 5.7 L (350 cu in) L83 which was used on the Corvette of 1982 and 1984. Complete with a 2.75 inch exhaust system, topped by a recalibrated 4-barrel carburetor, dual snorkel air cleaner assembly, aluminum intake manifold, aluminum flywheel, electric cooling fan, and furthermore a knock sensor including more aggressive spark timing, this engine produced 190 hp (142 kW) @ 4800 and 240 lb·ft (325 N·m) of torque @ 3200 rpm. In most cases, being mated to a 3.73 or 3:42 ratio limited slip rear axle and a T5 5-speed or 700R4 automatic, this engine provided its driver with a wide range of rpm to play in.
LE9
Years: 1981-1986
The LE9 5 L (305 cu in) was the truck/van version of the High Output 305. It also had flattop pistons for a 9.5:1 compression ratio, the "929" truck 350 camshaft for more torque, 14022601 casting heads featuring 1.84/1.50" valves and 53 cc chambers, a specially calibrated 4bbl Q-Jet, the hybrid centrifugal/vacuum advance distributor with ESC knock sensor setup, and lower restriction exhaust. The engine made 210 hp (157 kW) @ 4,600 and 250 lb·ft (339 N·m) @ 2,000 rpm.
L03
Years: 1987-95
The L03 was the "low output" 5 L (305 cu in) (compared to the 305 TPI LB9). It produced 170 hp (127 kW) and 255 lb·ft (346 N·m) of torque (190 hp (142 kW) at 4,400 rpm and 275 lb·ft (373 N·m) at 2,400 in 1993-1995 GM trucks). This engine used throttle-body fuel injection. The TBI uses a unique injector firing scheme, for every rotation of the engine, each injector fired twice.
LB9
Years: 1985-1992
Introduced in 1985, the LB9 was the first Chevrolet small block to have tuned-port fuel injection (TPI). It was introduced with 215 hp (160 kW) and 275 lb·ft (373 N·m) and varied between 190 hp (142 kW)-230 hp (172 kW) (with 275 lb·ft (373 N·m)-300 lb·ft (407 N·m) of torque) over the years offered. It was an option on all 1985-1992 Chevrolet Camaro & Pontiac Firebird models.
350
Not to be confused with Buick V8 engine, Oldsmobile V8 engine, or Pontiac V8 engine.
The first generation of Chevrolet small-blocks began with the 1955 Chevrolet 265 cu in (4.3 L) V8. But it was the 350 cu in (5.7 L) series that came to be emblematic of the Chevrolet small block V8 engine. The engine's physical dimensions (oversquare 4.00-inch bore and 3.48-inch stroke, 102 mm by 88 mm) are nearly identical to the 400 hp (298 kW) LS2 engine of today, but much has changed. It is by far the most widely used Chevrolet small-block; it has been installed in everything from station wagons to sports cars, in commercial vehicles, and even in boats and (in highly modified form) airplanes.
First usage of the 350 was in the 1967 Chevrolet Camaro and 1968 Nova producing 295 horsepower (gross); other Chevrolet vehicle lines followed suit in the year 1969.
The GM Goodwrench 350 crate engine comes in several variations. The lowest priced uses the pre-1986 four-bolt casting molds with two dipstick locations; pre-1980 on the driver's side and post-1980 on the passenger's side. This engine was produced in Mexico since 1981 as the Targetmaster 350, and now the GM Goodwrench 350.
ZQ3
Years: 1969, 1970, 1972-1975
The ZQ3 was the standard engine in the 1969-1970 Chevrolet Corvette. It was a 300 hp (224 kW) version of the 350 cu in (5.7 L) small-block, with 10.25:1 compression and hydraulic lifters. It used a Rochester "4MV" Quadra-Jet 4-barrel carburetor. This was the first block produced that featured the larger 2.45 inch main bearing versus the older 2.30 inch main bearing in 1968/1969.
The 1969 ZQ3 produced 200 hp (149 kW) and 300 lb·ft (407 N·m) with 8.5:1 compression, dropping another 10 hp (7 kW) in 1973. 1975 saw the ZQ3 at 165 hp (123 kW) and 255 lb·ft (346 N·m).
L46
Years: 1969, 1970
The L46 was an optional engine on the 1969-1970 Chevrolet Corvette. It was a 350 hp (261 kW), 380 lb·ft (515 N·m) version of the ZQ3 with higher 11:1 compression.
LT-1
LT-1 from a 1970 Chevrolet Camaro Z28
Years: 1970-1972
The LT-1 was the ultimate 350 cu in (5.7 L) V8, becoming available in 1970. It used solid lifters, 11:1 compression, a high-performance camshaft, and a Holley four-barrel carburetor on a special aluminum intake to produce 370 hp (276 kW) and 380 lb·ft (515 N·m). It was available on the Corvette and Camaro Z28. Power was down in 1971 to 330 hp (246 kW) and 360 lb·ft (488 N·m) with 9:1 compression, and again in 1972 (the last year of the LT-1) to 255 hp (190 kW) and 280 lb·ft (380 N·m).
There was also a later small-block engine called the "LT1".
L48
Years: 1967-1980
The L-48 is the original 350 cu in (5.7 L), available only in the Camaro or Chevy II/Nova in '67 & '68. In '69 it was used in almost everything; Camaros, Corvettes, Impalas, Chevelles & Novas. From '75-'80 it was available only in the Corvette. L-48's use a Hyd Cam, 4bbl Qjet, Cast pistons, 2 bolt main caps, "Pink" Rods, #0014 Blocks & #993 heads. Power output ranges from 300HP(gross) down to 175HP(net).
The L48 was the standard engine in the 1971 Chevrolet Corvette. It produced 270 hp (201 kW) and 360 lb·ft (488 N·m) with an 8.5:1 compression ratio.
The 1976-1979 L48 was the standard Corvette engine and produced 180 hp (134 kW) and 270 lb·ft (366 N·m). The 1980 L48 stood at 190 hp (142 kW) and 280 lb·ft (380 N·m) from 8.2:1 compression.
In 1972 the only way to get a L48 (4bbl V8) in a Chevy Nova was to get the Super Sport Package. This is indicated by the 5th digit in the VIN being a "K". 1972 was the only year you could verify the Super Sport package by the VIN.
In 1973 the "L-48" had cold air induction (throttle activated) and developed 190 hp (142 kW) (net). Beginning in 1974 the hp was reduced for several years until it reached a low of 165 hp (123 kW) (net) in 1975, before rising again.
L82
Years: 1973-1980
The 1973-1974 L82 was a "performance" version of the 350 producing 250 hp (186 kW) and 285 lb·ft (386 N·m) from 9:1 compression. It was down to 205 hp (153 kW) and 255 lb·ft (346 N·m) for 1975. It was the optional engine again in 1976-1977, producing 5 hp (4 kW) more. The 1978 L82 recovered somewhat, producing 220 hp (164 kW) and 260 lb·ft (353 N·m), and then 5 hp (4 kW) and 10 lb·ft (14 N·m) more for 1979. 1980 saw yet another 10 hp (7 kW) and 15 lb·ft (20 N·m).
L81
Years: 1981
The L81 was the only 5.7 L (350 cu in) Corvette engine for 1981. It produced 190 hp (142 kW) and 280 lb·ft (380 N·m) from 8.2:1 compression, exactly the same as the 1980 L48, but added computer control spark advance, replacing the vacuum advance.
L83
Years: 1982, 1984
The 1982 L83 was again the only Corvette engine (and only available with an automatic transmission) producing 200 hp (149 kW) and 285 lb·ft (386 N·m) from 9:1 compression. This was again the only engine on the new 1984 Vette, at 205 hp (153 kW) and 290 lb·ft (393 N·m). The L83 added Cross-Fire fuel injection (twin throttle-body fuel injection).
L98
For the new Generation IV V8, see GM L98.
Years: 1985-1992
The new 1985 L98 added tuned-port fuel injection "TPI", which produced 230 hp (172 kW) and 330 lb·ft (447 N·m). It was standard on all 1985-1991 Corvettes (rated at 230 hp (172 kW)-250 hp (186 kW) and 330 lb·ft (447 N·m)-350 lb·ft (475 N·m)). Optional on 87-92 Chevrolet Camaro & Pontiac Firebird models (rated at 225 hp (168 kW)-245 hp (183 kW) and 330 lb·ft (447 N·m)-345 lb·ft (468 N·m)) 1987 versions had 10 hp (7 kW) and 15 lb·ft (20 N·m) more thanks to 9.5:1 compression. Compression was up again in 1991 to 10:1 but output stayed the same.
LM1
The LM1 is the base 5.7 L (350 cu in) with a 4-barrel carburetor (usually with a Rochester Quadrajet) in passenger cars until 1988. Throughout its lifespan, it received either a points, electronic, and/or computer-controlled spark system, to conventional and feedback carburetors.
LM1s were superseded with the LO5 powerplant after 1988.
L05
The L05 was introduced in 1987 for use in Chevrolet/GMC trucks in both the GMT400 (introduced in April 1987 as 1988 models) and the R/V series trucks such as the K5 Blazer, Suburban, and rounded-era pickups formerly classed as the C/K until 1996 which includes chassis cabs and 4-door crew cabs. Although usage was for trucks, vans, and 9C1-optioned Caprices, the L05 was also used with the following vehicles:
* 1992/1993 Buick Roadmaster sedan and station wagon
* 1991/1992 Cadillac Brougham (optional engine)
* 1993 Cadillac Fleetwood
* 1992/1993 Chevrolet Caprice Wagon (optional engine)
* 1993 Chevrolet Caprice LTZ
* 1992 Oldsmobile Custom Cruiser Wagon (optional engine)
L05 usage was replaced by the GM LT1 after 1993 in GM B-Bodies until production ceased in 1996.
In mid 1996 the L05 was equipped with Vortec heads used in the 1996 G30.
L31
The L31 replaced the LO5 in 1996 - known as the Vortec 5700. Known as the GEN 1+, this was the final incarnation of the 1955-vintage small block, ending production in 2005 with the last vehicle being a Kodiak/Topkick HD truck. Volvo Penta and Mercury Marine still produces the L31. The "MARINE" intake is a potential upgrade for L31 trucks.
Subject: Re: Does it feel like the mid 10s yet?
Written By: 80sfan on 05/21/14 at 9:56 pm
A BRIEF HISTORY OF THE CHEVROLET SMALL-BLOCK V-8.
Chevrolet's small-block V8 is a famous automobile engine. Nicknamed "mouse motor" (opposed to the big block engine, nicknamed "rat") for its compact dimensions compared to other V8 engines of the time, production began in 1955 with the 265 engine. By 1957 it had grown to 283 cu in (4.6 L), and with the optional Rochester mechanical fuel injection, it became one of the first production engines ever to make one horsepower per cubic inch. This engine was used to power the Corvette, and the Bel Air at that time. It would later be extended to other vehicles as well, and replace the old style 265 V8s. The displacement changed over the years, eventually reaching 400 cu in (6.6 L), but none caught on like the 350 cu in (5.7 L) small-block. This engine is still in production today at General Motors Toluca, Mexico plant (primarily for the GM over-the-counter Goodwrench powerplants), but is no longer offered in current model year vehicles since the year 2004. Its production numbers were impressive, with more than 90,000,000 built. It has been produced in carbureted, mechanical fuel injection, and electronic fuel injection forms.
From 1955-74, the small-block engine was known as the "Turbo-Fire V8".
Although Buick, Cadillac, Oldsmobile, and Pontiac also designed V8 engines (see list of GM engines), it was Chevrolet's 350 cu in (5.7 L) small-block that became the GM corporate standard. Over the years, every American General Motors division except Saturn used the Chevrolet small-block, and its descendants (see GM LT engine and GM LS engine) continue as the company's mainstream V8 design today.
The small-block was on the Ward's 10 Best Engines of the 20th Century list.
Chevrolet tested the small-block twice with no water and no oil at wide-open throttle. The first time it lasted an hour and 15 minutes and the second time it lasted two hours.
Major Versions
Generation 1
The original design of the small block remained remarkably unchanged for its production run, which began in 1955 and ended, in passenger vehicles, in 2003. The engine is still being built today for many aftermarket applications, both to replace worn-out older engines and also by many builders as high-performance applications. There were, however many minor changes made to the engine over the years; these changes are listed below.
* 1955 - The first year of introduction in 265 cu in (4.3 L) only. As was fairly common for the time, no provision for an oil filter was included in the engine design.
* 1956 - Oil filtration was introduced, using a sock style filter in a canister.
* 1957 - The engine came with only front mounts, the side mount bosses were present but not drilled and tapped leaving its retrofitting problematic.
* 1962 - The block's cylinder wall casting was revised to allow four inch bores. Previously, only certain years of the 283 engine (1958-1962) could be bored safely to four inches.
* 1968 - The main journal diameter was increased to 2.45 in from 2.30 in and the connecting rod journal diameter was increased to 2.10 in from 2.00 in. This allowed the use of cast iron crankshafts as the previous parts were made of forged steel. The rod bolts were changed from 11/32 in. diameter to 3/8 inch. Additionally, the canister/sock style oil filter was now converted to use spin on filters. The oil fill location was moved from a tube on the front of the intake manifold to a cap on either side valve cover.
* 1987 - The valve cover surfaces were changed such that cylinder head mounting lip was raised and the bolt location was moved from 4 bolts on the perimeter, to 4 bolts down the centerline of the valve cover (this design debuted on the Corvette in 1985, and Chevrolet 4.3 L the year before). The rear main seal was changed from a 2-piece rubber design to a 1-piece rubber design that used a mounting appliance to hold it in place. This necessitated a change in the flywheel/flexplate bolt pattern as well. Also changed were the mounting angles of the center 2 bolts on each side of the intake manifold (from 90 degrees to 73 degrees) and the lifter bosses were increased in height to accept roller lifters. The alloy heads for use in the Corvette still retain the non-angled bolts (center 2 bolts attaching to the intake). Also all carburetors were done away with and replaced by TBI (throttle-body injection) fuel injection that acts some what like a carburetor.
* 1996 - This was the last change for the Generation I engine, and continued through the end of the production run in 2003; all 1997-2003 Generation I engines were Vortec truck engines. The cylinder heads were redesigned using improved ports and combustion chambers similar to those in the Generation II LT1. This change resulted in significant power increases.
SB2 and SB2.2
(Small Block/second generation) This engine was produced from 1996 to the present for racing applications only. The cylinder heads were redesigned and the lifter bores were offset. The valve sequence for each head was changed from the traditional E-I-I-E-E-I-I-E to a new I-E-I-E-E-I-E-I and because of this the camshaft was redesigned.
Generation II
LT1 from a 1993 Chevrolet Camaro Z28
See the GM LT engine page for more information on the Generation II small-block V8s, which differ mainly in their reverse-flow cooling system.
Generation III / IV
LS1 from a 1998 Chevrolet Camaro Z28
See the GM LS engine page for more information on the current family of General Motors small-block V8s.
Early Small Blocks
The first small block Chevrolet V-8 was a 265 cu in (4.3 L) engine that was developed in 1955 for the Corvette. Displacement and power eventually reached 327 cu in (5.4 L) and 375 hp (280 kW) (in prototypes) before the Corvette switched to Chevrolet big-block power. Although less powerful than big blocks, small block engines have remained popular due to their lower cost (including the cost of performance add-ons) and solid performance and reliability.
265
The 265 cu in (4.3 L) V8 was the first Chevrolet small block. Designed by Ed Cole's group at Chevrolet, it filled the power gap in the 1955 Corvette lineup, producing an impressive 250 hp (186 kW). The little engine went from drawings to production in just 15 weeks. Besides its compact dimensions, the small-block was known for its novel green-sand foundry construction process.
Dimensions were oversquare - 3.75 in (95 mm) bore and 3 in (76 mm) stroke. The small-block's 4.4 in (111.8 mm) bore spacing would continue in use for decades. It was a pushrod cast-iron engine with hydraulic lifters and a 2-barrel or 4-barrel Rochester carburetor. The 1955 conventional passenger car version produced 162 hp (121 kW) with a 2-barrel carburetor, or could be upgraded at extra cost to a "Power Pack" version conservatively rated at 180 hp (134 kW) with a four-barrel Rochester and dual exhaust. The first production year of this engine had no provision for oil filtration built into the block; however, an add-on filter mounted on the thermostat housing was installed during production. Due to the lack of adequate oil filtration provisions, the '55 model year block is typically only desirable to period collectors.
The 1956 Corvette introduced three versions of this engine - 210 hp (157 kW), 225 hp (168 kW) with twin 4-barrel carbs, and 240 hp (179 kW) with a high-lift cam.
* 1955, 1956 Chevrolet Corvette
* 1955 Chevrolet, 165 hp (123 kW) (2-barrel) and 195 hp (145 kW) (4-barrel)
283
The 283 cu in (4.6 L) V8 was introduced in 1957. It was a version of the 265 cu in (4.3 L) with a larger bore at 3.87 in (98 mm). There were five different versions ranging from 185 hp (138 kW) to 283 hp (211 kW) depending on whether a single carb, twin carbs, or fuel injection was used. Power was up a bit each year for 1958, 1959, and 1960.
The 1957 engine featured Ramjet mechanical fuel injection, allowing the engine to produce 1 hp (1 kW) per cubic inch, an impressive feat at the time. For 1961, an amazing 315 hp (235 kW) was available from this unit.
* 1957-1962 Chevrolet Corvette
302
Chevrolet produced a special 302 cu in (4.9 L) engine for Trans Am racing from 1967-1969. It was the product of placing the 3-inch stroke crankshaft from a 283 into a 4-inch bore 327 block. This engine was mostly used in the first-generation Camaro Z28. Just over 100 DZ block 302 engines were used in the, unique to South Africa, Chevrolet Firenza Can Am. Conservatively rated at 290 hp (216 kW), actual output was around 360 hp (268 kW). This block is one of 3 displacements that underwent a transformation for the 1968/1969 period when the main bearing size was increased from 2.30 in to 2.45 in.
307
A 307 cu in (5 L) version was produced from 1968 through 1973. Engine bore was 3.875 inches (98.4 mm) with a 3.25-inch (82.6 mm) stroke.
The 307 replaced the 283 in Chevrolet cars and produced 200 hp (149 kW) SAE gross at 4600 rpm and 300 lb·ft (407 N·m) of torque at 2400 rpm in the 1960s. The later emissions-modified versions produced just 115 hp (86 kW) SAE net, giving the engine one of the lowest power-per-displacement ratings of all time. Chevrolet never produced a high-performance version of this engine, though they did produce, for Outboard Marine Corporation, a high-performance marinized 307, rated at 235 hp (175 kW) and 245 hp (183 kW) SAE gross, depending on year, that shipped with the Corvette/Z-28's cast aluminum valve covers and Rochester QuadraJet carb. Chevy also built other versions of the OMC 307 rated at 210 hp (157 kW), 215 hp (160 kW) and 225 hp (168 kW) SAE gross.
One of the biggest myths about the 307 is that all the blocks were cast with a very low nickel content. However, some 307 blocks, such as casting number 3970020 with suffix VxxxxTHA (x's in place for date), had 010 and 020 stamped under the timing chain cover indicating high tin and nickel content.
327
The 327 cu in (5.4 L) V8, introduced in 1962, had a bore and stroke of 4 in (102 mm) by 3.25 in. Power ranged from 250 hp (186 kW) to 375 hp (280 kW) depending on the choice of carburetor or fuel injection, camshaft, cylinder heads, pistons and intake manifold. In 1962, the Duntov solid lifter cam versions produced 340 hp (254 kW), 344 lb·ft (466 N·m) with single Carter 4-brl, and 360 hp (268 kW), 352 lb·ft (477 N·m) with Rochester mechanical fuel injection. In 1964, horsepower increased to 365 hp (272 kW) for the now dubbed L79 version, and 375 hp (280 kW) for the fuel injected L84 respectively, making the L84 the most powerful naturally aspirated, single-cam, production small block V8 until the appearance of the 385 hp (287 kW), 385 lb·ft (522 N·m) Generation III LS6 in 2001. * L79, L84 1963-1965; Chevrolet Corvette. This block is one of three displacements that under went a major change in 1968/1969 when the main bearing size was increased from 2.30 to 2.4 inches (58.4–61.0 mm). In 1965 the SS malibu choice of the 327/350 hp know as the "L79", with a aluminum manifold, holley squarebore carb, chrome valve covers, a huge 8" balancer, huge 2.02" intake valves and could only be ordered with a 4 speed trans.
400
A 400 cu in (6.6 L) small-block was introduced in 1970 and produced for 10 years. It had a 4.125-inch (104.8 mm) bore and a 3.75-inch (95.3 mm) stroke. Initial output was 265 hp (198 kW) and was only available equipped with a 2-barrel carburetor. In 1974 a 4-barrel version of the 400 was introduced,while the 2-barrel version stopped production in 1975. 1976 was the last year that the 400 was used in a Chevrolet Passenger car, available in both the A-Body and B-Body line. While popular with circle-track racers, the engine was prone to cooling troubles if cylinder heads without steam holes were used. they mostly put out 250 hp stock.
Later Small Blocks
This section documents the odd-size small blocks developed after the 350 appeared in 1969. Many of these basic blocks are variations of the 350 design.
262
The 262 was a 262 cu in (4.3 L) 90° pushrod V8 with an iron block and heads. Bore and stroke were 3.67 in (93 mm) by 3.10 in (78.7 mm). Power output for 1975 was 110 hp (82 kW) and 195 lb·ft (264 N·m). The 262 was underpowered and was replaced by the 305 the following year.
This was Chevrolet's second 4.3 L-displacement powerplant; two other Chevrolet engines displaced 4.3 L: the Vortec 4300 (based on the Chevrolet 350, with two cylinders removed), and a derivative of the LT1 known as the L99 (using the 305's 3.736-inch bore, 5.94-inch connecting rods, and a 3-inch crankshaft stroke).
This engine was used in the following cars:
* 1975-1976 Chevrolet Monza
* 1975 Chevrolet Nova
267
The 267 was introduced in 1979 for GM F-Body(Camaro), G-bodies (Chevrolet Monte Carlo, El Camino, and Malibu Classic) and also used on GM B-body cars (Impala and Caprice models). The 267 cu in (4.4 L) had the 350's crankshaft stroke of 3.48" and the smallest bore of any small-block, 3.500 in. The 3.500" bore was also used on the 200 cu in (3.3 L) V6, which was introduced a year earlier. (The 200 was a Chevrolet V6 engine based on the small block with the #3 and #6 cylinders removed).
It was available with a Rochester Dualjet 210 - effectively a Rochester Quadrajet with no rear barrels. After 1980, electronic feedback carburetion was used on the 267.
While similar in displacement to the other 4.3-4.4 L V8 engines produced by General Motors (including the Oldsmobile 260 and Pontiac 265, the small bore 267 shared no parts with the other engines and was phased out after the 1982 model year due to inability to conform to emission standards. Chevrolet vehicles eventually used the 305 cu in (5 L) as its base V8 engine.
305
The 305 variant of the small-block Chevrolet had a displacement of 305 cu in (5 L) with a 3.736-inch (95 mm) bore and 3.48-inch (88.4 mm) stroke. The 262 was considered underpowered for use in vehicles with a wheelbase greater than 110 inches, so GM engineers decided to increase the bore diameter from 3.671 to 3.736 inches (93.2–94.9 mm) and increase the stroke from 3.10 to 3.48 inches (78.7–88.4 mm) (from the 350). Some performance enthusiasts have noted a marked resistance to performance upgrades on the 305 because of its small bore, poor selection of aftermarket cylinder heads, and the relatively high availability of 350 cu in (5.7 L) engines.
Induction systems for the 305 included carburetors (both 2 and 4-barrel), throttle-body injection (TBI), tuned-port fuel injection (TPI), and sequential fuel injection (GM Vortec).
After 1996, its usage was limited to light trucks and SUVs as the Vortec 5000.
Year hp (kW) lb·ft (N·m)
1976 140 250 w/2bbl.
1977 145 245 w/2bbl.
1978 140 240 w/2bbl.
1978 160 235 w/4bbl.
1979 130 245 w/2bbl.
1979† 125 235 w/2bbl.
1980 155 240 w/4bbl.
1981 150 240 w/4bbl
† California Emissions
The 305 was used in the following cars:
* 1977-1993 Chevrolet Caprice (includes Impala)
* 1977-1986 Pontiac Parisienne
* 1976-1979 Chevrolet Monza
* 1976-1979 Chevrolet Nova (also GM X-body clones after 1976)
* 1976-1992 Chevrolet Camaro
* 1976-1988 Chevrolet Malibu, Chevrolet El Camino, and Chevrolet Monte Carlo
* 1978-1992 Pontiac Firebird
* 1978-1980 Oldsmobile Cutlass (US Market only, Canadian market 1978-1987)
* 1991-1992 Oldsmobile Custom Cruiser
* 1981-1987 Pontiac Grand Prix
* 1975-1979 Buick Skylark
* 1977-2003 Chevrolet/GMC Trucks, SUVs, Vans
* 1991-1992 Cadillac Brougham
LG3
Years:1976-1980
Dualjet 2 bbl carb version with 8.5:1 compression.
LG4
Years: 1980-1987
The LG4 was the "low output" 305 cu in (5 L) (compared to the L69). It produced 150 hp (112 kW)-170 hp (127 kW) and 240 lb·ft (325 N·m)-250 lb·ft (339 N·m). The addition of a knock sensor for the engine management system in 1985 allowed an increase in compression and a more aggressive spark timing map in the ECM. As a result power increased for the 1985 models to 165 hp (123 kW) from the 150 hp (112 kW) rating in 1984.
L69
Years: 1983-1986
The L69 was the last true H.O. engine. The High Output 5 L (305 cu in) , featuring higher compression of 9.5:1 with heads of the to-be-discontinued LU5 Cross-Fire fuel injection engine, and utilizing camshaft and 4" catalytic converter of the 5.7 L (350 cu in) L83 which was used on the Corvette of 1982 and 1984. Complete with a 2.75 inch exhaust system, topped by a recalibrated 4-barrel carburetor, dual snorkel air cleaner assembly, aluminum intake manifold, aluminum flywheel, electric cooling fan, and furthermore a knock sensor including more aggressive spark timing, this engine produced 190 hp (142 kW) @ 4800 and 240 lb·ft (325 N·m) of torque @ 3200 rpm. In most cases, being mated to a 3.73 or 3:42 ratio limited slip rear axle and a T5 5-speed or 700R4 automatic, this engine provided its driver with a wide range of rpm to play in.
LE9
Years: 1981-1986
The LE9 5 L (305 cu in) was the truck/van version of the High Output 305. It also had flattop pistons for a 9.5:1 compression ratio, the "929" truck 350 camshaft for more torque, 14022601 casting heads featuring 1.84/1.50" valves and 53 cc chambers, a specially calibrated 4bbl Q-Jet, the hybrid centrifugal/vacuum advance distributor with ESC knock sensor setup, and lower restriction exhaust. The engine made 210 hp (157 kW) @ 4,600 and 250 lb·ft (339 N·m) @ 2,000 rpm.
L03
Years: 1987-95
The L03 was the "low output" 5 L (305 cu in) (compared to the 305 TPI LB9). It produced 170 hp (127 kW) and 255 lb·ft (346 N·m) of torque (190 hp (142 kW) at 4,400 rpm and 275 lb·ft (373 N·m) at 2,400 in 1993-1995 GM trucks). This engine used throttle-body fuel injection. The TBI uses a unique injector firing scheme, for every rotation of the engine, each injector fired twice.
LB9
Years: 1985-1992
Introduced in 1985, the LB9 was the first Chevrolet small block to have tuned-port fuel injection (TPI). It was introduced with 215 hp (160 kW) and 275 lb·ft (373 N·m) and varied between 190 hp (142 kW)-230 hp (172 kW) (with 275 lb·ft (373 N·m)-300 lb·ft (407 N·m) of torque) over the years offered. It was an option on all 1985-1992 Chevrolet Camaro & Pontiac Firebird models.
350
Not to be confused with Buick V8 engine, Oldsmobile V8 engine, or Pontiac V8 engine.
The first generation of Chevrolet small-blocks began with the 1955 Chevrolet 265 cu in (4.3 L) V8. But it was the 350 cu in (5.7 L) series that came to be emblematic of the Chevrolet small block V8 engine. The engine's physical dimensions (oversquare 4.00-inch bore and 3.48-inch stroke, 102 mm by 88 mm) are nearly identical to the 400 hp (298 kW) LS2 engine of today, but much has changed. It is by far the most widely used Chevrolet small-block; it has been installed in everything from station wagons to sports cars, in commercial vehicles, and even in boats and (in highly modified form) airplanes.
First usage of the 350 was in the 1967 Chevrolet Camaro and 1968 Nova producing 295 horsepower (gross); other Chevrolet vehicle lines followed suit in the year 1969.
The GM Goodwrench 350 crate engine comes in several variations. The lowest priced uses the pre-1986 four-bolt casting molds with two dipstick locations; pre-1980 on the driver's side and post-1980 on the passenger's side. This engine was produced in Mexico since 1981 as the Targetmaster 350, and now the GM Goodwrench 350.
ZQ3
Years: 1969, 1970, 1972-1975
The ZQ3 was the standard engine in the 1969-1970 Chevrolet Corvette. It was a 300 hp (224 kW) version of the 350 cu in (5.7 L) small-block, with 10.25:1 compression and hydraulic lifters. It used a Rochester "4MV" Quadra-Jet 4-barrel carburetor. This was the first block produced that featured the larger 2.45 inch main bearing versus the older 2.30 inch main bearing in 1968/1969.
The 1969 ZQ3 produced 200 hp (149 kW) and 300 lb·ft (407 N·m) with 8.5:1 compression, dropping another 10 hp (7 kW) in 1973. 1975 saw the ZQ3 at 165 hp (123 kW) and 255 lb·ft (346 N·m).
L46
Years: 1969, 1970
The L46 was an optional engine on the 1969-1970 Chevrolet Corvette. It was a 350 hp (261 kW), 380 lb·ft (515 N·m) version of the ZQ3 with higher 11:1 compression.
LT-1
LT-1 from a 1970 Chevrolet Camaro Z28
Years: 1970-1972
The LT-1 was the ultimate 350 cu in (5.7 L) V8, becoming available in 1970. It used solid lifters, 11:1 compression, a high-performance camshaft, and a Holley four-barrel carburetor on a special aluminum intake to produce 370 hp (276 kW) and 380 lb·ft (515 N·m). It was available on the Corvette and Camaro Z28. Power was down in 1971 to 330 hp (246 kW) and 360 lb·ft (488 N·m) with 9:1 compression, and again in 1972 (the last year of the LT-1) to 255 hp (190 kW) and 280 lb·ft (380 N·m).
There was also a later small-block engine called the "LT1".
L48
Years: 1967-1980
The L-48 is the original 350 cu in (5.7 L), available only in the Camaro or Chevy II/Nova in '67 & '68. In '69 it was used in almost everything; Camaros, Corvettes, Impalas, Chevelles & Novas. From '75-'80 it was available only in the Corvette. L-48's use a Hyd Cam, 4bbl Qjet, Cast pistons, 2 bolt main caps, "Pink" Rods, #0014 Blocks & #993 heads. Power output ranges from 300HP(gross) down to 175HP(net).
The L48 was the standard engine in the 1971 Chevrolet Corvette. It produced 270 hp (201 kW) and 360 lb·ft (488 N·m) with an 8.5:1 compression ratio.
The 1976-1979 L48 was the standard Corvette engine and produced 180 hp (134 kW) and 270 lb·ft (366 N·m). The 1980 L48 stood at 190 hp (142 kW) and 280 lb·ft (380 N·m) from 8.2:1 compression.
In 1972 the only way to get a L48 (4bbl V8) in a Chevy Nova was to get the Super Sport Package. This is indicated by the 5th digit in the VIN being a "K". 1972 was the only year you could verify the Super Sport package by the VIN.
In 1973 the "L-48" had cold air induction (throttle activated) and developed 190 hp (142 kW) (net). Beginning in 1974 the hp was reduced for several years until it reached a low of 165 hp (123 kW) (net) in 1975, before rising again.
L82
Years: 1973-1980
The 1973-1974 L82 was a "performance" version of the 350 producing 250 hp (186 kW) and 285 lb·ft (386 N·m) from 9:1 compression. It was down to 205 hp (153 kW) and 255 lb·ft (346 N·m) for 1975. It was the optional engine again in 1976-1977, producing 5 hp (4 kW) more. The 1978 L82 recovered somewhat, producing 220 hp (164 kW) and 260 lb·ft (353 N·m), and then 5 hp (4 kW) and 10 lb·ft (14 N·m) more for 1979. 1980 saw yet another 10 hp (7 kW) and 15 lb·ft (20 N·m).
L81
Years: 1981
The L81 was the only 5.7 L (350 cu in) Corvette engine for 1981. It produced 190 hp (142 kW) and 280 lb·ft (380 N·m) from 8.2:1 compression, exactly the same as the 1980 L48, but added computer control spark advance, replacing the vacuum advance.
L83
Years: 1982, 1984
The 1982 L83 was again the only Corvette engine (and only available with an automatic transmission) producing 200 hp (149 kW) and 285 lb·ft (386 N·m) from 9:1 compression. This was again the only engine on the new 1984 Vette, at 205 hp (153 kW) and 290 lb·ft (393 N·m). The L83 added Cross-Fire fuel injection (twin throttle-body fuel injection).
L98
For the new Generation IV V8, see GM L98.
Years: 1985-1992
The new 1985 L98 added tuned-port fuel injection "TPI", which produced 230 hp (172 kW) and 330 lb·ft (447 N·m). It was standard on all 1985-1991 Corvettes (rated at 230 hp (172 kW)-250 hp (186 kW) and 330 lb·ft (447 N·m)-350 lb·ft (475 N·m)). Optional on 87-92 Chevrolet Camaro & Pontiac Firebird models (rated at 225 hp (168 kW)-245 hp (183 kW) and 330 lb·ft (447 N·m)-345 lb·ft (468 N·m)) 1987 versions had 10 hp (7 kW) and 15 lb·ft (20 N·m) more thanks to 9.5:1 compression. Compression was up again in 1991 to 10:1 but output stayed the same.
LM1
The LM1 is the base 5.7 L (350 cu in) with a 4-barrel carburetor (usually with a Rochester Quadrajet) in passenger cars until 1988. Throughout its lifespan, it received either a points, electronic, and/or computer-controlled spark system, to conventional and feedback carburetors.
LM1s were superseded with the LO5 powerplant after 1988.
L05
The L05 was introduced in 1987 for use in Chevrolet/GMC trucks in both the GMT400 (introduced in April 1987 as 1988 models) and the R/V series trucks such as the K5 Blazer, Suburban, and rounded-era pickups formerly classed as the C/K until 1996 which includes chassis cabs and 4-door crew cabs. Although usage was for trucks, vans, and 9C1-optioned Caprices, the L05 was also used with the following vehicles:
* 1992/1993 Buick Roadmaster sedan and station wagon
* 1991/1992 Cadillac Brougham (optional engine)
* 1993 Cadillac Fleetwood
* 1992/1993 Chevrolet Caprice Wagon (optional engine)
* 1993 Chevrolet Caprice LTZ
* 1992 Oldsmobile Custom Cruiser Wagon (optional engine)
L05 usage was replaced by the GM LT1 after 1993 in GM B-Bodies until production ceased in 1996.
In mid 1996 the L05 was equipped with Vortec heads used in the 1996 G30.
L31
The L31 replaced the LO5 in 1996 - known as the Vortec 5700. Known as the GEN 1+, this was the final incarnation of the 1955-vintage small block, ending production in 2005 with the last vehicle being a Kodiak/Topkick HD truck. Volvo Penta and Mercury Marine still produces the L31. The "MARINE" intake is a potential upgrade for L31 trucks.
Too....much....information,....going to............EXPLODDE!!!!!!
http://wordpress.mrreid.org/wp-content/uploads/2010/09/car-explosion.jpg
Subject: Re: Does it feel like the mid 10s yet?
Written By: Foo Bar on 05/21/14 at 10:42 pm
Too....much....information,....going to............EXPLODDE!!!!!!
http://wordpress.mrreid.org/wp-content/uploads/2010/09/car-explosion.jpg
But if your car just did that, wouldn't you want to research the History of the Chevrolet small-block V8, either to ensure that you were buying a suitable replacement engine, or at least to ensure that the initial failure mode doesn't happen again? :)
Subject: Re: Does it feel like the mid 10s yet?
Written By: 80sfan on 05/21/14 at 11:00 pm
But if your car just did that, wouldn't you want to research the History of the Chevrolet small-block V8, either to ensure that you were buying a suitable replacement engine, or at least to ensure that the initial failure mode doesn't happen again? :)
Too late! I exploded.
Subject: Re: Does it feel like the mid 10s yet?
Written By: AL-B Mk. III on 05/22/14 at 12:59 am
A BRIEF HISTORY OF THE CHEVROLET SMALL-BLOCK V-8.
Chevrolet's small-block V8 is a famous automobile engine. Nicknamed "mouse motor" (opposed to the big block engine, nicknamed "rat") for its compact dimensions compared to other V8 engines of the time, production began in 1955 with the 265 engine. By 1957 it had grown to 283 cu in (4.6 L), and with the optional Rochester mechanical fuel injection, it became one of the first production engines ever to make one horsepower per cubic inch. This engine was used to power the Corvette, and the Bel Air at that time. It would later be extended to other vehicles as well, and replace the old style 265 V8s. The displacement changed over the years, eventually reaching 400 cu in (6.6 L), but none caught on like the 350 cu in (5.7 L) small-block. This engine is still in production today at General Motors Toluca, Mexico plant (primarily for the GM over-the-counter Goodwrench powerplants), but is no longer offered in current model year vehicles since the year 2004. Its production numbers were impressive, with more than 90,000,000 built. It has been produced in carbureted, mechanical fuel injection, and electronic fuel injection forms.
From 1955-74, the small-block engine was known as the "Turbo-Fire V8".
Although Buick, Cadillac, Oldsmobile, and Pontiac also designed V8 engines (see list of GM engines), it was Chevrolet's 350 cu in (5.7 L) small-block that became the GM corporate standard. Over the years, every American General Motors division except Saturn used the Chevrolet small-block, and its descendants (see GM LT engine and GM LS engine) continue as the company's mainstream V8 design today.
The small-block was on the Ward's 10 Best Engines of the 20th Century list.
Chevrolet tested the small-block twice with no water and no oil at wide-open throttle. The first time it lasted an hour and 15 minutes and the second time it lasted two hours.
Major Versions
Generation 1
The original design of the small block remained remarkably unchanged for its production run, which began in 1955 and ended, in passenger vehicles, in 2003. The engine is still being built today for many aftermarket applications, both to replace worn-out older engines and also by many builders as high-performance applications. There were, however many minor changes made to the engine over the years; these changes are listed below.
* 1955 - The first year of introduction in 265 cu in (4.3 L) only. As was fairly common for the time, no provision for an oil filter was included in the engine design.
* 1956 - Oil filtration was introduced, using a sock style filter in a canister.
* 1957 - The engine came with only front mounts, the side mount bosses were present but not drilled and tapped leaving its retrofitting problematic.
* 1962 - The block's cylinder wall casting was revised to allow four inch bores. Previously, only certain years of the 283 engine (1958-1962) could be bored safely to four inches.
* 1968 - The main journal diameter was increased to 2.45 in from 2.30 in and the connecting rod journal diameter was increased to 2.10 in from 2.00 in. This allowed the use of cast iron crankshafts as the previous parts were made of forged steel. The rod bolts were changed from 11/32 in. diameter to 3/8 inch. Additionally, the canister/sock style oil filter was now converted to use spin on filters. The oil fill location was moved from a tube on the front of the intake manifold to a cap on either side valve cover.
* 1987 - The valve cover surfaces were changed such that cylinder head mounting lip was raised and the bolt location was moved from 4 bolts on the perimeter, to 4 bolts down the centerline of the valve cover (this design debuted on the Corvette in 1985, and Chevrolet 4.3 L the year before). The rear main seal was changed from a 2-piece rubber design to a 1-piece rubber design that used a mounting appliance to hold it in place. This necessitated a change in the flywheel/flexplate bolt pattern as well. Also changed were the mounting angles of the center 2 bolts on each side of the intake manifold (from 90 degrees to 73 degrees) and the lifter bosses were increased in height to accept roller lifters. The alloy heads for use in the Corvette still retain the non-angled bolts (center 2 bolts attaching to the intake). Also all carburetors were done away with and replaced by TBI (throttle-body injection) fuel injection that acts some what like a carburetor.
* 1996 - This was the last change for the Generation I engine, and continued through the end of the production run in 2003; all 1997-2003 Generation I engines were Vortec truck engines. The cylinder heads were redesigned using improved ports and combustion chambers similar to those in the Generation II LT1. This change resulted in significant power increases.
SB2 and SB2.2
(Small Block/second generation) This engine was produced from 1996 to the present for racing applications only. The cylinder heads were redesigned and the lifter bores were offset. The valve sequence for each head was changed from the traditional E-I-I-E-E-I-I-E to a new I-E-I-E-E-I-E-I and because of this the camshaft was redesigned.
Generation II
LT1 from a 1993 Chevrolet Camaro Z28
See the GM LT engine page for more information on the Generation II small-block V8s, which differ mainly in their reverse-flow cooling system.
Generation III / IV
LS1 from a 1998 Chevrolet Camaro Z28
See the GM LS engine page for more information on the current family of General Motors small-block V8s.
Early Small Blocks
The first small block Chevrolet V-8 was a 265 cu in (4.3 L) engine that was developed in 1955 for the Corvette. Displacement and power eventually reached 327 cu in (5.4 L) and 375 hp (280 kW) (in prototypes) before the Corvette switched to Chevrolet big-block power. Although less powerful than big blocks, small block engines have remained popular due to their lower cost (including the cost of performance add-ons) and solid performance and reliability.
265
The 265 cu in (4.3 L) V8 was the first Chevrolet small block. Designed by Ed Cole's group at Chevrolet, it filled the power gap in the 1955 Corvette lineup, producing an impressive 250 hp (186 kW). The little engine went from drawings to production in just 15 weeks. Besides its compact dimensions, the small-block was known for its novel green-sand foundry construction process.
Dimensions were oversquare - 3.75 in (95 mm) bore and 3 in (76 mm) stroke. The small-block's 4.4 in (111.8 mm) bore spacing would continue in use for decades. It was a pushrod cast-iron engine with hydraulic lifters and a 2-barrel or 4-barrel Rochester carburetor. The 1955 conventional passenger car version produced 162 hp (121 kW) with a 2-barrel carburetor, or could be upgraded at extra cost to a "Power Pack" version conservatively rated at 180 hp (134 kW) with a four-barrel Rochester and dual exhaust. The first production year of this engine had no provision for oil filtration built into the block; however, an add-on filter mounted on the thermostat housing was installed during production. Due to the lack of adequate oil filtration provisions, the '55 model year block is typically only desirable to period collectors.
The 1956 Corvette introduced three versions of this engine - 210 hp (157 kW), 225 hp (168 kW) with twin 4-barrel carbs, and 240 hp (179 kW) with a high-lift cam.
* 1955, 1956 Chevrolet Corvette
* 1955 Chevrolet, 165 hp (123 kW) (2-barrel) and 195 hp (145 kW) (4-barrel)
283
The 283 cu in (4.6 L) V8 was introduced in 1957. It was a version of the 265 cu in (4.3 L) with a larger bore at 3.87 in (98 mm). There were five different versions ranging from 185 hp (138 kW) to 283 hp (211 kW) depending on whether a single carb, twin carbs, or fuel injection was used. Power was up a bit each year for 1958, 1959, and 1960.
The 1957 engine featured Ramjet mechanical fuel injection, allowing the engine to produce 1 hp (1 kW) per cubic inch, an impressive feat at the time. For 1961, an amazing 315 hp (235 kW) was available from this unit.
* 1957-1962 Chevrolet Corvette
302
Chevrolet produced a special 302 cu in (4.9 L) engine for Trans Am racing from 1967-1969. It was the product of placing the 3-inch stroke crankshaft from a 283 into a 4-inch bore 327 block. This engine was mostly used in the first-generation Camaro Z28. Just over 100 DZ block 302 engines were used in the, unique to South Africa, Chevrolet Firenza Can Am. Conservatively rated at 290 hp (216 kW), actual output was around 360 hp (268 kW). This block is one of 3 displacements that underwent a transformation for the 1968/1969 period when the main bearing size was increased from 2.30 in to 2.45 in.
307
A 307 cu in (5 L) version was produced from 1968 through 1973. Engine bore was 3.875 inches (98.4 mm) with a 3.25-inch (82.6 mm) stroke.
The 307 replaced the 283 in Chevrolet cars and produced 200 hp (149 kW) SAE gross at 4600 rpm and 300 lb·ft (407 N·m) of torque at 2400 rpm in the 1960s. The later emissions-modified versions produced just 115 hp (86 kW) SAE net, giving the engine one of the lowest power-per-displacement ratings of all time. Chevrolet never produced a high-performance version of this engine, though they did produce, for Outboard Marine Corporation, a high-performance marinized 307, rated at 235 hp (175 kW) and 245 hp (183 kW) SAE gross, depending on year, that shipped with the Corvette/Z-28's cast aluminum valve covers and Rochester QuadraJet carb. Chevy also built other versions of the OMC 307 rated at 210 hp (157 kW), 215 hp (160 kW) and 225 hp (168 kW) SAE gross.
One of the biggest myths about the 307 is that all the blocks were cast with a very low nickel content. However, some 307 blocks, such as casting number 3970020 with suffix VxxxxTHA (x's in place for date), had 010 and 020 stamped under the timing chain cover indicating high tin and nickel content.
327
The 327 cu in (5.4 L) V8, introduced in 1962, had a bore and stroke of 4 in (102 mm) by 3.25 in. Power ranged from 250 hp (186 kW) to 375 hp (280 kW) depending on the choice of carburetor or fuel injection, camshaft, cylinder heads, pistons and intake manifold. In 1962, the Duntov solid lifter cam versions produced 340 hp (254 kW), 344 lb·ft (466 N·m) with single Carter 4-brl, and 360 hp (268 kW), 352 lb·ft (477 N·m) with Rochester mechanical fuel injection. In 1964, horsepower increased to 365 hp (272 kW) for the now dubbed L79 version, and 375 hp (280 kW) for the fuel injected L84 respectively, making the L84 the most powerful naturally aspirated, single-cam, production small block V8 until the appearance of the 385 hp (287 kW), 385 lb·ft (522 N·m) Generation III LS6 in 2001. * L79, L84 1963-1965; Chevrolet Corvette. This block is one of three displacements that under went a major change in 1968/1969 when the main bearing size was increased from 2.30 to 2.4 inches (58.4–61.0 mm). In 1965 the SS malibu choice of the 327/350 hp know as the "L79", with a aluminum manifold, holley squarebore carb, chrome valve covers, a huge 8" balancer, huge 2.02" intake valves and could only be ordered with a 4 speed trans.
400
A 400 cu in (6.6 L) small-block was introduced in 1970 and produced for 10 years. It had a 4.125-inch (104.8 mm) bore and a 3.75-inch (95.3 mm) stroke. Initial output was 265 hp (198 kW) and was only available equipped with a 2-barrel carburetor. In 1974 a 4-barrel version of the 400 was introduced,while the 2-barrel version stopped production in 1975. 1976 was the last year that the 400 was used in a Chevrolet Passenger car, available in both the A-Body and B-Body line. While popular with circle-track racers, the engine was prone to cooling troubles if cylinder heads without steam holes were used. they mostly put out 250 hp stock.
Later Small Blocks
This section documents the odd-size small blocks developed after the 350 appeared in 1969. Many of these basic blocks are variations of the 350 design.
262
The 262 was a 262 cu in (4.3 L) 90° pushrod V8 with an iron block and heads. Bore and stroke were 3.67 in (93 mm) by 3.10 in (78.7 mm). Power output for 1975 was 110 hp (82 kW) and 195 lb·ft (264 N·m). The 262 was underpowered and was replaced by the 305 the following year.
This was Chevrolet's second 4.3 L-displacement powerplant; two other Chevrolet engines displaced 4.3 L: the Vortec 4300 (based on the Chevrolet 350, with two cylinders removed), and a derivative of the LT1 known as the L99 (using the 305's 3.736-inch bore, 5.94-inch connecting rods, and a 3-inch crankshaft stroke).
This engine was used in the following cars:
* 1975-1976 Chevrolet Monza
* 1975 Chevrolet Nova
267
The 267 was introduced in 1979 for GM F-Body(Camaro), G-bodies (Chevrolet Monte Carlo, El Camino, and Malibu Classic) and also used on GM B-body cars (Impala and Caprice models). The 267 cu in (4.4 L) had the 350's crankshaft stroke of 3.48" and the smallest bore of any small-block, 3.500 in. The 3.500" bore was also used on the 200 cu in (3.3 L) V6, which was introduced a year earlier. (The 200 was a Chevrolet V6 engine based on the small block with the #3 and #6 cylinders removed).
It was available with a Rochester Dualjet 210 - effectively a Rochester Quadrajet with no rear barrels. After 1980, electronic feedback carburetion was used on the 267.
While similar in displacement to the other 4.3-4.4 L V8 engines produced by General Motors (including the Oldsmobile 260 and Pontiac 265, the small bore 267 shared no parts with the other engines and was phased out after the 1982 model year due to inability to conform to emission standards. Chevrolet vehicles eventually used the 305 cu in (5 L) as its base V8 engine.
305
The 305 variant of the small-block Chevrolet had a displacement of 305 cu in (5 L) with a 3.736-inch (95 mm) bore and 3.48-inch (88.4 mm) stroke. The 262 was considered underpowered for use in vehicles with a wheelbase greater than 110 inches, so GM engineers decided to increase the bore diameter from 3.671 to 3.736 inches (93.2–94.9 mm) and increase the stroke from 3.10 to 3.48 inches (78.7–88.4 mm) (from the 350). Some performance enthusiasts have noted a marked resistance to performance upgrades on the 305 because of its small bore, poor selection of aftermarket cylinder heads, and the relatively high availability of 350 cu in (5.7 L) engines.
Induction systems for the 305 included carburetors (both 2 and 4-barrel), throttle-body injection (TBI), tuned-port fuel injection (TPI), and sequential fuel injection (GM Vortec).
After 1996, its usage was limited to light trucks and SUVs as the Vortec 5000.
Year hp (kW) lb·ft (N·m)
1976 140 250 w/2bbl.
1977 145 245 w/2bbl.
1978 140 240 w/2bbl.
1978 160 235 w/4bbl.
1979 130 245 w/2bbl.
1979† 125 235 w/2bbl.
1980 155 240 w/4bbl.
1981 150 240 w/4bbl
† California Emissions
The 305 was used in the following cars:
* 1977-1993 Chevrolet Caprice (includes Impala)
* 1977-1986 Pontiac Parisienne
* 1976-1979 Chevrolet Monza
* 1976-1979 Chevrolet Nova (also GM X-body clones after 1976)
* 1976-1992 Chevrolet Camaro
* 1976-1988 Chevrolet Malibu, Chevrolet El Camino, and Chevrolet Monte Carlo
* 1978-1992 Pontiac Firebird
* 1978-1980 Oldsmobile Cutlass (US Market only, Canadian market 1978-1987)
* 1991-1992 Oldsmobile Custom Cruiser
* 1981-1987 Pontiac Grand Prix
* 1975-1979 Buick Skylark
* 1977-2003 Chevrolet/GMC Trucks, SUVs, Vans
* 1991-1992 Cadillac Brougham
LG3
Years:1976-1980
Dualjet 2 bbl carb version with 8.5:1 compression.
LG4
Years: 1980-1987
The LG4 was the "low output" 305 cu in (5 L) (compared to the L69). It produced 150 hp (112 kW)-170 hp (127 kW) and 240 lb·ft (325 N·m)-250 lb·ft (339 N·m). The addition of a knock sensor for the engine management system in 1985 allowed an increase in compression and a more aggressive spark timing map in the ECM. As a result power increased for the 1985 models to 165 hp (123 kW) from the 150 hp (112 kW) rating in 1984.
L69
Years: 1983-1986
The L69 was the last true H.O. engine. The High Output 5 L (305 cu in) , featuring higher compression of 9.5:1 with heads of the to-be-discontinued LU5 Cross-Fire fuel injection engine, and utilizing camshaft and 4" catalytic converter of the 5.7 L (350 cu in) L83 which was used on the Corvette of 1982 and 1984. Complete with a 2.75 inch exhaust system, topped by a recalibrated 4-barrel carburetor, dual snorkel air cleaner assembly, aluminum intake manifold, aluminum flywheel, electric cooling fan, and furthermore a knock sensor including more aggressive spark timing, this engine produced 190 hp (142 kW) @ 4800 and 240 lb·ft (325 N·m) of torque @ 3200 rpm. In most cases, being mated to a 3.73 or 3:42 ratio limited slip rear axle and a T5 5-speed or 700R4 automatic, this engine provided its driver with a wide range of rpm to play in.
LE9
Years: 1981-1986
The LE9 5 L (305 cu in) was the truck/van version of the High Output 305. It also had flattop pistons for a 9.5:1 compression ratio, the "929" truck 350 camshaft for more torque, 14022601 casting heads featuring 1.84/1.50" valves and 53 cc chambers, a specially calibrated 4bbl Q-Jet, the hybrid centrifugal/vacuum advance distributor with ESC knock sensor setup, and lower restriction exhaust. The engine made 210 hp (157 kW) @ 4,600 and 250 lb·ft (339 N·m) @ 2,000 rpm.
L03
Years: 1987-95
The L03 was the "low output" 5 L (305 cu in) (compared to the 305 TPI LB9). It produced 170 hp (127 kW) and 255 lb·ft (346 N·m) of torque (190 hp (142 kW) at 4,400 rpm and 275 lb·ft (373 N·m) at 2,400 in 1993-1995 GM trucks). This engine used throttle-body fuel injection. The TBI uses a unique injector firing scheme, for every rotation of the engine, each injector fired twice.
LB9
Years: 1985-1992
Introduced in 1985, the LB9 was the first Chevrolet small block to have tuned-port fuel injection (TPI). It was introduced with 215 hp (160 kW) and 275 lb·ft (373 N·m) and varied between 190 hp (142 kW)-230 hp (172 kW) (with 275 lb·ft (373 N·m)-300 lb·ft (407 N·m) of torque) over the years offered. It was an option on all 1985-1992 Chevrolet Camaro & Pontiac Firebird models.
350
Not to be confused with Buick V8 engine, Oldsmobile V8 engine, or Pontiac V8 engine.
The first generation of Chevrolet small-blocks began with the 1955 Chevrolet 265 cu in (4.3 L) V8. But it was the 350 cu in (5.7 L) series that came to be emblematic of the Chevrolet small block V8 engine. The engine's physical dimensions (oversquare 4.00-inch bore and 3.48-inch stroke, 102 mm by 88 mm) are nearly identical to the 400 hp (298 kW) LS2 engine of today, but much has changed. It is by far the most widely used Chevrolet small-block; it has been installed in everything from station wagons to sports cars, in commercial vehicles, and even in boats and (in highly modified form) airplanes.
First usage of the 350 was in the 1967 Chevrolet Camaro and 1968 Nova producing 295 horsepower (gross); other Chevrolet vehicle lines followed suit in the year 1969.
The GM Goodwrench 350 crate engine comes in several variations. The lowest priced uses the pre-1986 four-bolt casting molds with two dipstick locations; pre-1980 on the driver's side and post-1980 on the passenger's side. This engine was produced in Mexico since 1981 as the Targetmaster 350, and now the GM Goodwrench 350.
ZQ3
Years: 1969, 1970, 1972-1975
The ZQ3 was the standard engine in the 1969-1970 Chevrolet Corvette. It was a 300 hp (224 kW) version of the 350 cu in (5.7 L) small-block, with 10.25:1 compression and hydraulic lifters. It used a Rochester "4MV" Quadra-Jet 4-barrel carburetor. This was the first block produced that featured the larger 2.45 inch main bearing versus the older 2.30 inch main bearing in 1968/1969.
The 1969 ZQ3 produced 200 hp (149 kW) and 300 lb·ft (407 N·m) with 8.5:1 compression, dropping another 10 hp (7 kW) in 1973. 1975 saw the ZQ3 at 165 hp (123 kW) and 255 lb·ft (346 N·m).
L46
Years: 1969, 1970
The L46 was an optional engine on the 1969-1970 Chevrolet Corvette. It was a 350 hp (261 kW), 380 lb·ft (515 N·m) version of the ZQ3 with higher 11:1 compression.
LT-1
LT-1 from a 1970 Chevrolet Camaro Z28
Years: 1970-1972
The LT-1 was the ultimate 350 cu in (5.7 L) V8, becoming available in 1970. It used solid lifters, 11:1 compression, a high-performance camshaft, and a Holley four-barrel carburetor on a special aluminum intake to produce 370 hp (276 kW) and 380 lb·ft (515 N·m). It was available on the Corvette and Camaro Z28. Power was down in 1971 to 330 hp (246 kW) and 360 lb·ft (488 N·m) with 9:1 compression, and again in 1972 (the last year of the LT-1) to 255 hp (190 kW) and 280 lb·ft (380 N·m).
There was also a later small-block engine called the "LT1".
L48
Years: 1967-1980
The L-48 is the original 350 cu in (5.7 L), available only in the Camaro or Chevy II/Nova in '67 & '68. In '69 it was used in almost everything; Camaros, Corvettes, Impalas, Chevelles & Novas. From '75-'80 it was available only in the Corvette. L-48's use a Hyd Cam, 4bbl Qjet, Cast pistons, 2 bolt main caps, "Pink" Rods, #0014 Blocks & #993 heads. Power output ranges from 300HP(gross) down to 175HP(net).
The L48 was the standard engine in the 1971 Chevrolet Corvette. It produced 270 hp (201 kW) and 360 lb·ft (488 N·m) with an 8.5:1 compression ratio.
The 1976-1979 L48 was the standard Corvette engine and produced 180 hp (134 kW) and 270 lb·ft (366 N·m). The 1980 L48 stood at 190 hp (142 kW) and 280 lb·ft (380 N·m) from 8.2:1 compression.
In 1972 the only way to get a L48 (4bbl V8) in a Chevy Nova was to get the Super Sport Package. This is indicated by the 5th digit in the VIN being a "K". 1972 was the only year you could verify the Super Sport package by the VIN.
In 1973 the "L-48" had cold air induction (throttle activated) and developed 190 hp (142 kW) (net). Beginning in 1974 the hp was reduced for several years until it reached a low of 165 hp (123 kW) (net) in 1975, before rising again.
L82
Years: 1973-1980
The 1973-1974 L82 was a "performance" version of the 350 producing 250 hp (186 kW) and 285 lb·ft (386 N·m) from 9:1 compression. It was down to 205 hp (153 kW) and 255 lb·ft (346 N·m) for 1975. It was the optional engine again in 1976-1977, producing 5 hp (4 kW) more. The 1978 L82 recovered somewhat, producing 220 hp (164 kW) and 260 lb·ft (353 N·m), and then 5 hp (4 kW) and 10 lb·ft (14 N·m) more for 1979. 1980 saw yet another 10 hp (7 kW) and 15 lb·ft (20 N·m).
L81
Years: 1981
The L81 was the only 5.7 L (350 cu in) Corvette engine for 1981. It produced 190 hp (142 kW) and 280 lb·ft (380 N·m) from 8.2:1 compression, exactly the same as the 1980 L48, but added computer control spark advance, replacing the vacuum advance.
L83
Years: 1982, 1984
The 1982 L83 was again the only Corvette engine (and only available with an automatic transmission) producing 200 hp (149 kW) and 285 lb·ft (386 N·m) from 9:1 compression. This was again the only engine on the new 1984 Vette, at 205 hp (153 kW) and 290 lb·ft (393 N·m). The L83 added Cross-Fire fuel injection (twin throttle-body fuel injection).
L98
For the new Generation IV V8, see GM L98.
Years: 1985-1992
The new 1985 L98 added tuned-port fuel injection "TPI", which produced 230 hp (172 kW) and 330 lb·ft (447 N·m). It was standard on all 1985-1991 Corvettes (rated at 230 hp (172 kW)-250 hp (186 kW) and 330 lb·ft (447 N·m)-350 lb·ft (475 N·m)). Optional on 87-92 Chevrolet Camaro & Pontiac Firebird models (rated at 225 hp (168 kW)-245 hp (183 kW) and 330 lb·ft (447 N·m)-345 lb·ft (468 N·m)) 1987 versions had 10 hp (7 kW) and 15 lb·ft (20 N·m) more thanks to 9.5:1 compression. Compression was up again in 1991 to 10:1 but output stayed the same.
LM1
The LM1 is the base 5.7 L (350 cu in) with a 4-barrel carburetor (usually with a Rochester Quadrajet) in passenger cars until 1988. Throughout its lifespan, it received either a points, electronic, and/or computer-controlled spark system, to conventional and feedback carburetors.
LM1s were superseded with the LO5 powerplant after 1988.
L05
The L05 was introduced in 1987 for use in Chevrolet/GMC trucks in both the GMT400 (introduced in April 1987 as 1988 models) and the R/V series trucks such as the K5 Blazer, Suburban, and rounded-era pickups formerly classed as the C/K until 1996 which includes chassis cabs and 4-door crew cabs. Although usage was for trucks, vans, and 9C1-optioned Caprices, the L05 was also used with the following vehicles:
* 1992/1993 Buick Roadmaster sedan and station wagon
* 1991/1992 Cadillac Brougham (optional engine)
* 1993 Cadillac Fleetwood
* 1992/1993 Chevrolet Caprice Wagon (optional engine)
* 1993 Chevrolet Caprice LTZ
* 1992 Oldsmobile Custom Cruiser Wagon (optional engine)
L05 usage was replaced by the GM LT1 after 1993 in GM B-Bodies until production ceased in 1996.
In mid 1996 the L05 was equipped with Vortec heads used in the 1996 G30.
L31
The L31 replaced the LO5 in 1996 - known as the Vortec 5700. Known as the GEN 1+, this was the final incarnation of the 1955-vintage small block, ending production in 2005 with the last vehicle being a Kodiak/Topkick HD truck. Volvo Penta and Mercury Marine still produces the L31. The "MARINE" intake is a potential upgrade for L31 trucks.
Now that's what I call zeitgeist. Zeitgeist, zeitgiest, zeitgeist. Yay, zeitgeist! ::)
Subject: Re: Does it feel like the mid 10s yet?
Written By: Philip Eno on 05/22/14 at 4:59 am
I'm not talking about the calendar 2010s you smart aleck.
Aleck is a nickname for Alexander. The phrase "smart aleck" is possibly derived from the name Aleck Hoag, a 19th century con man and thief.
Subject: Re: Does it feel like the mid 10s yet?
Written By: Dagwood on 05/22/14 at 7:54 am
To the really long post about cars: okay, what was the point of that? Anyway, I feel like the zeitgeist of this decade started in 2008 or 2009. I think the 2010s started early, as by 2008, the iPhone was out, YouTube was huge, Electropop was in, such as Lady Gaga and Katy Perry. Skinny jeans, neon colors, asymmetrical haircuts, low-cut shirts. All of that stuff is still popular today. Just like how the 1950s started early.
You know decadeology is banned here, right?
Subject: Re: Does it feel like the mid 10s yet?
Written By: Howard on 05/22/14 at 9:37 am
Every decade the mid part of it has this like warm feeling to it.
Does it feel like the mid of the decade yet? Usually by this time the zeitgeist is in full effect.
why would I get a warm feeling? ::)
Subject: Re: Does it feel like the mid 10s yet?
Written By: Howard on 05/22/14 at 9:38 am
The end of the year will be the mid point, so let's for now enjoy the zeitgeist of the early 10's. 8)
What's a zeitgeist? ???
Subject: Re: Does it feel like the mid 10s yet?
Written By: Howard on 05/22/14 at 9:40 am
Too....much....information,....going to............EXPLODDE!!!!!!
http://wordpress.mrreid.org/wp-content/uploads/2010/09/car-explosion.jpg
;D
Subject: Re: Does it feel like the mid 10s yet?
Written By: Philip Eno on 05/22/14 at 10:30 am
What's a zeitgeist? ???
...the defining spirit or mood of a particular period of history as shown by the ideas and beliefs of the time.
Subject: Re: Does it feel like the mid 10s yet?
Written By: bchris02 on 05/22/14 at 10:32 am
Is it just me or does 2014 have a very different feel from 2009? I tend to think 2009 was more '00s than '10s.
Subject: Re: Does it feel like the mid 10s yet?
Written By: Philip Eno on 05/22/14 at 10:35 am
Is it just me or does 2014 have a very different feel from 2009? I tend to think 2009 was more '00s than '10s.
Definitely the weather has got worse, hurricanes are stronger, Summer is hotter, rain is wetter, and snowfalls are deeper.
Subject: Re: Does it feel like the mid 10s yet?
Written By: Howard on 05/22/14 at 12:23 pm
Definitely the weather has got worse, hurricanes are stronger, Summer is hotter, rain is wetter, and snowfalls are deeper.
same as New York.
Subject: Re: Does it feel like the mid 10s yet?
Written By: Philip Eno on 05/22/14 at 12:23 pm
Definitely the weather has got worse, hurricanes are stronger, Summer is hotter, rain is wetter, and snowfalls are deeper.
same as New York.
The whole world over!
Subject: Re: Does it feel like the mid 10s yet?
Written By: Henk on 05/22/14 at 1:08 pm
When I look at this year's calendar I see that we are now in the month of May in 2004, and yes that is mid 10s to me.
Sorry, you can't repeat a fudge action without waiting 24 hours.
2004? What calendar are you using? :D ;)
Subject: Re: Does it feel like the mid 10s yet?
Written By: Philip Eno on 05/22/14 at 1:22 pm
2004? What calendar are you using? :D ;)
Well done, you are the first to spot the decade error, you win the prize!
Subject: Re: Does it feel like the mid 10s yet?
Written By: Philip Eno on 05/22/14 at 1:46 pm
2004? What calendar are you using? :D ;)
Not even an ardent decadeologist noticed!
Subject: Re: Does it feel like the mid 10s yet?
Written By: Paul on 05/22/14 at 3:47 pm
Not even an ardent decadeologist noticed!
Even as we speak, there's probably a 'does the 2014 zeitgeist feel like the 2004 zeitgeist' thread being formed... ::)
Subject: Re: Does it feel like the mid 10s yet?
Written By: Inertia on 05/22/14 at 4:19 pm
Even as we speak, there's probably a 'does the 2014 zeitgeist feel like the 2004 zeitgeist' thread being formed... ::)
Or does the "zeitgeist" of 2014 feel more like the zeitgeist of 1714? Or maybe 1504?
::)
Oh the inanity!
Subject: Re: Does it feel like the mid 10s yet?
Written By: Jessica on 05/22/14 at 4:28 pm
Do any of those years involve Chevy engines? If not, they should.
Subject: Re: Does it feel like the mid 10s yet?
Written By: Howard on 05/22/14 at 6:33 pm
2004? What calendar are you using? :D ;)
;D
Subject: Re: Does it feel like the mid 10s yet?
Written By: Howard on 05/22/14 at 6:35 pm
Or does the "zeitgeist" of 2014 feel more like the zeitgeist of 1714? Or maybe 1504?
::)
Oh the inanity!
so on and so forth.
Subject: Re: Does it feel like the mid 10s yet?
Written By: Howard on 05/22/14 at 6:35 pm
Do any of those years involve Chevy engines? If not, they should.
not right now, maybe tomorrow.
Subject: Re: Does it feel like the mid 10s yet?
Written By: mxcrashxm on 05/22/14 at 6:58 pm
Yes I say because the electropop music is gone. There are different styles of music and the fact the early part has been over about 5 months.
Subject: Re: Does it feel like the mid 10s yet?
Written By: Dagwood on 05/22/14 at 8:04 pm
Even as we speak, there's probably a 'does the 2014 zeitgeist feel like the 2004 zeitgeist' thread being formed... ::)
Poltergeist? Much better movie.
Subject: Re: Does it feel like the mid 10s yet?
Written By: Philip Eno on 05/23/14 at 9:05 am
Poltergeist? Much better movie.
Forget Poltergeist II: The Other Side!
Subject: Re: Does it feel like the mid 10s yet?
Written By: Philip Eno on 05/23/14 at 9:30 am
What's a zeitgeist? ???
http://photoworldmanila.com/wp-content/uploads/2009/02/zeitgeist.jpg
Subject: Re: Does it feel like the mid 10s yet?
Written By: warped on 05/23/14 at 9:54 am
So let's leave it alone, 'cause we can't see eye to eye
There ain't no good guy, there ain't no zeitgeist
There's only you and me and we just disagree
Ooh-hoo-hoo, oh-oh-ho
http://www.youtube.com/watch?v=YnVh3btBU04
Subject: Re: Does it feel like the mid 10s yet?
Written By: warped on 05/23/14 at 10:36 am
Quote from: Philip Eno on May 20, 2014, 01:54:24 PM
When I look at this year's calendar I see that we are now in the month of May in 2004, and yes that is mid 10s to me.
Sorry, you can't repeat a fudge action without waiting 24 hours.
2004? What calendar are you using? :D ;)
Not even an ardent decadeologist noticed!
That's because to them 2004 is 2014.
http://img338.imageshack.us/img338/1240/decadeology.jpg
Subject: Re: Does it feel like the mid 10s yet?
Written By: Howard on 05/23/14 at 3:50 pm
Quote from: Philip Eno on May 20, 2014, 01:54:24 PM
When I look at this year's calendar I see that we are now in the month of May in 2004, and yes that is mid 10s to me.
Sorry, you can't repeat a fudge action without waiting 24 hours.
That's because to them 2004 is 2014.
http://img338.imageshack.us/img338/1240/decadeology.jpg
;D
Subject: Re: Does it feel like the mid 10s yet?
Written By: Mitch Kramer on 05/24/14 at 6:42 am
Rihanna??? No, her name is Stevie Nicks and the name of the song is "Rhiannon" by Fleetwood Mac.
Subject: Re: Does it feel like the mid 10s yet?
Written By: dnt88 on 05/26/14 at 12:10 am
Yes I say because the electropop music is gone. There are different styles of music and the fact the early part has been over about 5 months.
LMFAO! Are you living under a rock??? EDM is definitely not gone. Just watch the top 50 hits on youtube for may 2014 and most are EDM songs. ::) Even the world cup's main song is EDM.
And dead at people saying 2009 is more 2000's than 2010's... The economy of that year sucked very much, just like the 2010's... And as far as I remember hip hop and R&B were no longer popular in 2009. Movies and music are pretty much the same. ::) Katy perry and gaga are still popular and people are still clinging to the retro style fashion of the late 2000's. The 2000's were nothing like 2009. I think the last true year of the 2000's was 2007 and part of 2008.
Anyway... going back to the OP's question... this decade is very homogenic... for me it feels like the early 2010's, but that's because things have not changed that much. There are no new styles of fashion or music. Movies and tv shows are the same and America still has the same presidents and politicians and the same economic problems. That's why it doesn't feel like the mid 2010's, but we're in the mid 2010's so that's what it feels like, a washed-up version of the early 2010's with the same tired things. ::)j
Subject: Re: Does it feel like the mid 10s yet?
Written By: Inlandsvägen1986 on 05/26/14 at 1:15 am
Quote from: Philip Eno on May 20, 2014, 01:54:24 PM
When I look at this year's calendar I see that we are now in the month of May in 2004, and yes that is mid 10s to me.
Sorry, you can't repeat a fudge action without waiting 24 hours.
That's because to them 2004 is 2014.
2014 is 1986 -> just check the calendar ;)
Subject: Re: Does it feel like the mid 10s yet?
Written By: Howard on 05/26/14 at 7:23 am
2014 is 1986 -> just check the calendar ;)
2014 is 2014.
Subject: Re: Does it feel like the mid 10s yet?
Written By: Inlandsvägen1986 on 05/26/14 at 9:31 am
2014 is 2014.
http://www.timeanddate.com/calendar/?year=1986&country=27
http://www.timeanddate.com/calendar/?year=2014&country=27
Subject: Re: Does it feel like the mid 10s yet?
Written By: mxcrashxm on 05/26/14 at 1:55 pm
LMFAO! Are you living under a rock??? EDM is definitely not gone. Just watch the top 50 hits on youtube for may 2014 and most are EDM songs. ::) Even the world cup's main song is EDM.
And dead at people saying 2009 is more 2000's than 2010's... The economy of that year sucked very much, just like the 2010's... And as far as I remember hip hop and R&B were no longer popular in 2009. Movies and music are pretty much the same. ::) Katy perry and gaga are still popular and people are still clinging to the retro style fashion of the late 2000's. The 2000's were nothing like 2009. I think the last true year of the 2000's was 2007 and part of 2008.
Anyway... going back to the OP's question... this decade is very homogenic... for me it feels like the early 2010's, but that's because things have not changed that much. There are no new styles of fashion or music. Movies and tv shows are the same and America still has the same presidents and politicians and the same economic problems. That's why it doesn't feel like the mid 2010's, but we're in the mid 2010's so that's what it feels like, a washed-up version of the early 2010's with the same tired things. ::)j
I mean the electropop like Kesha, BEP (Black-eyed Peas), Lady Gaga, Katy Perry (all of their early albums while BEP's latest albums), etc. I dont even hear it today like I did back in 2008-11. I now hear a different style of EDM.
Subject: Re: Does it feel like the mid 10s yet?
Written By: Inlandsvägen1986 on 05/26/14 at 2:38 pm
I dont even hear it today like I did back in 2008-11. I now hear a different style of EDM.
There is always different styles around, but generally - music today sounds not very different from 2010 or 2011. Most songs from 2014 can definitely go for the early 2010s as well.
Subject: Re: Does it feel like the mid 10s yet?
Written By: Todd Pettingzoo on 05/26/14 at 2:41 pm
LMFAO! Are you living under a rock??? EDM is definitely not gone. Just watch the top 50 hits on youtube for may 2014 and most are EDM songs. ::) Even the world cup's main song is EDM.
And dead at people saying 2009 is more 2000's than 2010's... The economy of that year sucked very much, just like the 2010's... And as far as I remember hip hop and R&B were no longer popular in 2009. Movies and music are pretty much the same. ::) Katy perry and gaga are still popular and people are still clinging to the retro style fashion of the late 2000's. The 2000's were nothing like 2009. I think the last true year of the 2000's was 2007 and part of 2008.
Anyway... going back to the OP's question... this decade is very homogenic... for me it feels like the early 2010's, but that's because things have not changed that much. There are no new styles of fashion or music. Movies and tv shows are the same and America still has the same presidents and politicians and the same economic problems. That's why it doesn't feel like the mid 2010's, but we're in the mid 2010's so that's what it feels like, a washed-up version of the early 2010's with the same tired things. ::)j
The US economy was horrendous in 2009. It still has problems, but is sort of fairly decent right now.
Subject: Re: Does it feel like the mid 10s yet?
Written By: Howard on 05/26/14 at 3:10 pm
The US economy was horrendous in 2009. It still has problems, but is sort of fairly decent right now.
yep, the economy still has problems.
Subject: Re: Does it feel like the mid 10s yet?
Written By: mxcrashxm on 05/26/14 at 3:21 pm
There is always different styles around, but generally - music today sounds not very different from 2010 or 2011. Most songs from 2014 can definitely go for the early 2010s as well.
I understand there will always be different styles of all types of music, but I was just telling this guy that I don't hear the electro-pop of 2008-11 anymore. In fact, last year I heard Lady Gaga's Applause, Katy Perry's Roar and it both sounded way different than their earlier songs. Also, I have heard Pharrell's Happy and Brand New songs and they don't sound like anything from 2010-11 in that case. Not only that, Daft Punk's Get Lucky and Move Yourself to Dance don't even sound like a 2010 or 2011 song either. All those songs I listed have a different EDM tune to it than 2010-11's electropop tune.
Subject: Re: Does it feel like the mid 10s yet?
Written By: Emman on 05/26/14 at 3:28 pm
The US economy was horrendous in 2009. It still has problems, but is sort of fairly decent right now.
While the economy might have stabilized for now, there is still very deep problems, I wouldn't even call it kind of decent, it really is absolutely terrible compared to what most living people in the US has ever known. The economy is just plain stagnant(with deep fiscal burdens) and still very fragile, some people are even questioning whether we'll ever see the kind of growth we had pre-Great Recession. I suspect sometime in the immediate future(probably in the late 2010s or 2020s) we will see momentous economic and political changes result from the fallout of The Great Recession, it might even be the destruction of the whole post World War 2 paradigm.
Subject: Re: Does it feel like the mid 10s yet?
Written By: Inlandsvägen1986 on 05/26/14 at 6:02 pm
Daft Punk's Get Lucky and Move Yourself to Dance don't even sound like a 2010 or 2011 song either.
Get Lucky actually sounds like from the late 70s ... :)
It's a disco song.
Subject: Re: Does it feel like the mid 10s yet?
Written By: Philip Eno on 05/27/14 at 8:42 am
2014 is 1986 -> just check the calendar ;)
Ywap!
http://luirig.altervista.org/calendar/img2.php?year=1986
http://www.calendarpedia.co.uk/images/calendar-2014-l.png
Subject: Re: Does it feel like the mid 10s yet?
Written By: Philip Eno on 05/27/14 at 10:51 am
A BRIEF HISTORY OF THE CHEVROLET SMALL-BLOCK V-8.
Chevrolet's small-block V8 is a famous automobile engine. Nicknamed "mouse motor" (opposed to the big block engine, nicknamed "rat") for its compact dimensions compared to other V8 engines of the time, production began in 1955 with the 265 engine. By 1957 it had grown to 283 cu in (4.6 L), and with the optional Rochester mechanical fuel injection, it became one of the first production engines ever to make one horsepower per cubic inch. This engine was used to power the Corvette, and the Bel Air at that time. It would later be extended to other vehicles as well, and replace the old style 265 V8s. The displacement changed over the years, eventually reaching 400 cu in (6.6 L), but none caught on like the 350 cu in (5.7 L) small-block. This engine is still in production today at General Motors Toluca, Mexico plant (primarily for the GM over-the-counter Goodwrench powerplants), but is no longer offered in current model year vehicles since the year 2004. Its production numbers were impressive, with more than 90,000,000 built. It has been produced in carbureted, mechanical fuel injection, and electronic fuel injection forms.
From 1955-74, the small-block engine was known as the "Turbo-Fire V8".
Although Buick, Cadillac, Oldsmobile, and Pontiac also designed V8 engines (see list of GM engines), it was Chevrolet's 350 cu in (5.7 L) small-block that became the GM corporate standard. Over the years, every American General Motors division except Saturn used the Chevrolet small-block, and its descendants (see GM LT engine and GM LS engine) continue as the company's mainstream V8 design today.
The small-block was on the Ward's 10 Best Engines of the 20th Century list.
Chevrolet tested the small-block twice with no water and no oil at wide-open throttle. The first time it lasted an hour and 15 minutes and the second time it lasted two hours.
Major Versions
Generation 1
The original design of the small block remained remarkably unchanged for its production run, which began in 1955 and ended, in passenger vehicles, in 2003. The engine is still being built today for many aftermarket applications, both to replace worn-out older engines and also by many builders as high-performance applications. There were, however many minor changes made to the engine over the years; these changes are listed below.
* 1955 - The first year of introduction in 265 cu in (4.3 L) only. As was fairly common for the time, no provision for an oil filter was included in the engine design.
* 1956 - Oil filtration was introduced, using a sock style filter in a canister.
* 1957 - The engine came with only front mounts, the side mount bosses were present but not drilled and tapped leaving its retrofitting problematic.
* 1962 - The block's cylinder wall casting was revised to allow four inch bores. Previously, only certain years of the 283 engine (1958-1962) could be bored safely to four inches.
* 1968 - The main journal diameter was increased to 2.45 in from 2.30 in and the connecting rod journal diameter was increased to 2.10 in from 2.00 in. This allowed the use of cast iron crankshafts as the previous parts were made of forged steel. The rod bolts were changed from 11/32 in. diameter to 3/8 inch. Additionally, the canister/sock style oil filter was now converted to use spin on filters. The oil fill location was moved from a tube on the front of the intake manifold to a cap on either side valve cover.
* 1987 - The valve cover surfaces were changed such that cylinder head mounting lip was raised and the bolt location was moved from 4 bolts on the perimeter, to 4 bolts down the centerline of the valve cover (this design debuted on the Corvette in 1985, and Chevrolet 4.3 L the year before). The rear main seal was changed from a 2-piece rubber design to a 1-piece rubber design that used a mounting appliance to hold it in place. This necessitated a change in the flywheel/flexplate bolt pattern as well. Also changed were the mounting angles of the center 2 bolts on each side of the intake manifold (from 90 degrees to 73 degrees) and the lifter bosses were increased in height to accept roller lifters. The alloy heads for use in the Corvette still retain the non-angled bolts (center 2 bolts attaching to the intake). Also all carburetors were done away with and replaced by TBI (throttle-body injection) fuel injection that acts some what like a carburetor.
* 1996 - This was the last change for the Generation I engine, and continued through the end of the production run in 2003; all 1997-2003 Generation I engines were Vortec truck engines. The cylinder heads were redesigned using improved ports and combustion chambers similar to those in the Generation II LT1. This change resulted in significant power increases.
SB2 and SB2.2
(Small Block/second generation) This engine was produced from 1996 to the present for racing applications only. The cylinder heads were redesigned and the lifter bores were offset. The valve sequence for each head was changed from the traditional E-I-I-E-E-I-I-E to a new I-E-I-E-E-I-E-I and because of this the camshaft was redesigned.
Generation II
LT1 from a 1993 Chevrolet Camaro Z28
See the GM LT engine page for more information on the Generation II small-block V8s, which differ mainly in their reverse-flow cooling system.
Generation III / IV
LS1 from a 1998 Chevrolet Camaro Z28
See the GM LS engine page for more information on the current family of General Motors small-block V8s.
Early Small Blocks
The first small block Chevrolet V-8 was a 265 cu in (4.3 L) engine that was developed in 1955 for the Corvette. Displacement and power eventually reached 327 cu in (5.4 L) and 375 hp (280 kW) (in prototypes) before the Corvette switched to Chevrolet big-block power. Although less powerful than big blocks, small block engines have remained popular due to their lower cost (including the cost of performance add-ons) and solid performance and reliability.
265
The 265 cu in (4.3 L) V8 was the first Chevrolet small block. Designed by Ed Cole's group at Chevrolet, it filled the power gap in the 1955 Corvette lineup, producing an impressive 250 hp (186 kW). The little engine went from drawings to production in just 15 weeks. Besides its compact dimensions, the small-block was known for its novel green-sand foundry construction process.
Dimensions were oversquare - 3.75 in (95 mm) bore and 3 in (76 mm) stroke. The small-block's 4.4 in (111.8 mm) bore spacing would continue in use for decades. It was a pushrod cast-iron engine with hydraulic lifters and a 2-barrel or 4-barrel Rochester carburetor. The 1955 conventional passenger car version produced 162 hp (121 kW) with a 2-barrel carburetor, or could be upgraded at extra cost to a "Power Pack" version conservatively rated at 180 hp (134 kW) with a four-barrel Rochester and dual exhaust. The first production year of this engine had no provision for oil filtration built into the block; however, an add-on filter mounted on the thermostat housing was installed during production. Due to the lack of adequate oil filtration provisions, the '55 model year block is typically only desirable to period collectors.
The 1956 Corvette introduced three versions of this engine - 210 hp (157 kW), 225 hp (168 kW) with twin 4-barrel carbs, and 240 hp (179 kW) with a high-lift cam.
* 1955, 1956 Chevrolet Corvette
* 1955 Chevrolet, 165 hp (123 kW) (2-barrel) and 195 hp (145 kW) (4-barrel)
283
The 283 cu in (4.6 L) V8 was introduced in 1957. It was a version of the 265 cu in (4.3 L) with a larger bore at 3.87 in (98 mm). There were five different versions ranging from 185 hp (138 kW) to 283 hp (211 kW) depending on whether a single carb, twin carbs, or fuel injection was used. Power was up a bit each year for 1958, 1959, and 1960.
The 1957 engine featured Ramjet mechanical fuel injection, allowing the engine to produce 1 hp (1 kW) per cubic inch, an impressive feat at the time. For 1961, an amazing 315 hp (235 kW) was available from this unit.
* 1957-1962 Chevrolet Corvette
302
Chevrolet produced a special 302 cu in (4.9 L) engine for Trans Am racing from 1967-1969. It was the product of placing the 3-inch stroke crankshaft from a 283 into a 4-inch bore 327 block. This engine was mostly used in the first-generation Camaro Z28. Just over 100 DZ block 302 engines were used in the, unique to South Africa, Chevrolet Firenza Can Am. Conservatively rated at 290 hp (216 kW), actual output was around 360 hp (268 kW). This block is one of 3 displacements that underwent a transformation for the 1968/1969 period when the main bearing size was increased from 2.30 in to 2.45 in.
307
A 307 cu in (5 L) version was produced from 1968 through 1973. Engine bore was 3.875 inches (98.4 mm) with a 3.25-inch (82.6 mm) stroke.
The 307 replaced the 283 in Chevrolet cars and produced 200 hp (149 kW) SAE gross at 4600 rpm and 300 lb·ft (407 N·m) of torque at 2400 rpm in the 1960s. The later emissions-modified versions produced just 115 hp (86 kW) SAE net, giving the engine one of the lowest power-per-displacement ratings of all time. Chevrolet never produced a high-performance version of this engine, though they did produce, for Outboard Marine Corporation, a high-performance marinized 307, rated at 235 hp (175 kW) and 245 hp (183 kW) SAE gross, depending on year, that shipped with the Corvette/Z-28's cast aluminum valve covers and Rochester QuadraJet carb. Chevy also built other versions of the OMC 307 rated at 210 hp (157 kW), 215 hp (160 kW) and 225 hp (168 kW) SAE gross.
One of the biggest myths about the 307 is that all the blocks were cast with a very low nickel content. However, some 307 blocks, such as casting number 3970020 with suffix VxxxxTHA (x's in place for date), had 010 and 020 stamped under the timing chain cover indicating high tin and nickel content.
327
The 327 cu in (5.4 L) V8, introduced in 1962, had a bore and stroke of 4 in (102 mm) by 3.25 in. Power ranged from 250 hp (186 kW) to 375 hp (280 kW) depending on the choice of carburetor or fuel injection, camshaft, cylinder heads, pistons and intake manifold. In 1962, the Duntov solid lifter cam versions produced 340 hp (254 kW), 344 lb·ft (466 N·m) with single Carter 4-brl, and 360 hp (268 kW), 352 lb·ft (477 N·m) with Rochester mechanical fuel injection. In 1964, horsepower increased to 365 hp (272 kW) for the now dubbed L79 version, and 375 hp (280 kW) for the fuel injected L84 respectively, making the L84 the most powerful naturally aspirated, single-cam, production small block V8 until the appearance of the 385 hp (287 kW), 385 lb·ft (522 N·m) Generation III LS6 in 2001. * L79, L84 1963-1965; Chevrolet Corvette. This block is one of three displacements that under went a major change in 1968/1969 when the main bearing size was increased from 2.30 to 2.4 inches (58.4–61.0 mm). In 1965 the SS malibu choice of the 327/350 hp know as the "L79", with a aluminum manifold, holley squarebore carb, chrome valve covers, a huge 8" balancer, huge 2.02" intake valves and could only be ordered with a 4 speed trans.
400
A 400 cu in (6.6 L) small-block was introduced in 1970 and produced for 10 years. It had a 4.125-inch (104.8 mm) bore and a 3.75-inch (95.3 mm) stroke. Initial output was 265 hp (198 kW) and was only available equipped with a 2-barrel carburetor. In 1974 a 4-barrel version of the 400 was introduced,while the 2-barrel version stopped production in 1975. 1976 was the last year that the 400 was used in a Chevrolet Passenger car, available in both the A-Body and B-Body line. While popular with circle-track racers, the engine was prone to cooling troubles if cylinder heads without steam holes were used. they mostly put out 250 hp stock.
Later Small Blocks
This section documents the odd-size small blocks developed after the 350 appeared in 1969. Many of these basic blocks are variations of the 350 design.
262
The 262 was a 262 cu in (4.3 L) 90° pushrod V8 with an iron block and heads. Bore and stroke were 3.67 in (93 mm) by 3.10 in (78.7 mm). Power output for 1975 was 110 hp (82 kW) and 195 lb·ft (264 N·m). The 262 was underpowered and was replaced by the 305 the following year.
This was Chevrolet's second 4.3 L-displacement powerplant; two other Chevrolet engines displaced 4.3 L: the Vortec 4300 (based on the Chevrolet 350, with two cylinders removed), and a derivative of the LT1 known as the L99 (using the 305's 3.736-inch bore, 5.94-inch connecting rods, and a 3-inch crankshaft stroke).
This engine was used in the following cars:
* 1975-1976 Chevrolet Monza
* 1975 Chevrolet Nova
267
The 267 was introduced in 1979 for GM F-Body(Camaro), G-bodies (Chevrolet Monte Carlo, El Camino, and Malibu Classic) and also used on GM B-body cars (Impala and Caprice models). The 267 cu in (4.4 L) had the 350's crankshaft stroke of 3.48" and the smallest bore of any small-block, 3.500 in. The 3.500" bore was also used on the 200 cu in (3.3 L) V6, which was introduced a year earlier. (The 200 was a Chevrolet V6 engine based on the small block with the #3 and #6 cylinders removed).
It was available with a Rochester Dualjet 210 - effectively a Rochester Quadrajet with no rear barrels. After 1980, electronic feedback carburetion was used on the 267.
While similar in displacement to the other 4.3-4.4 L V8 engines produced by General Motors (including the Oldsmobile 260 and Pontiac 265, the small bore 267 shared no parts with the other engines and was phased out after the 1982 model year due to inability to conform to emission standards. Chevrolet vehicles eventually used the 305 cu in (5 L) as its base V8 engine.
305
The 305 variant of the small-block Chevrolet had a displacement of 305 cu in (5 L) with a 3.736-inch (95 mm) bore and 3.48-inch (88.4 mm) stroke. The 262 was considered underpowered for use in vehicles with a wheelbase greater than 110 inches, so GM engineers decided to increase the bore diameter from 3.671 to 3.736 inches (93.2–94.9 mm) and increase the stroke from 3.10 to 3.48 inches (78.7–88.4 mm) (from the 350). Some performance enthusiasts have noted a marked resistance to performance upgrades on the 305 because of its small bore, poor selection of aftermarket cylinder heads, and the relatively high availability of 350 cu in (5.7 L) engines.
Induction systems for the 305 included carburetors (both 2 and 4-barrel), throttle-body injection (TBI), tuned-port fuel injection (TPI), and sequential fuel injection (GM Vortec).
After 1996, its usage was limited to light trucks and SUVs as the Vortec 5000.
Year hp (kW) lb·ft (N·m)
1976 140 250 w/2bbl.
1977 145 245 w/2bbl.
1978 140 240 w/2bbl.
1978 160 235 w/4bbl.
1979 130 245 w/2bbl.
1979† 125 235 w/2bbl.
1980 155 240 w/4bbl.
1981 150 240 w/4bbl
† California Emissions
The 305 was used in the following cars:
* 1977-1993 Chevrolet Caprice (includes Impala)
* 1977-1986 Pontiac Parisienne
* 1976-1979 Chevrolet Monza
* 1976-1979 Chevrolet Nova (also GM X-body clones after 1976)
* 1976-1992 Chevrolet Camaro
* 1976-1988 Chevrolet Malibu, Chevrolet El Camino, and Chevrolet Monte Carlo
* 1978-1992 Pontiac Firebird
* 1978-1980 Oldsmobile Cutlass (US Market only, Canadian market 1978-1987)
* 1991-1992 Oldsmobile Custom Cruiser
* 1981-1987 Pontiac Grand Prix
* 1975-1979 Buick Skylark
* 1977-2003 Chevrolet/GMC Trucks, SUVs, Vans
* 1991-1992 Cadillac Brougham
LG3
Years:1976-1980
Dualjet 2 bbl carb version with 8.5:1 compression.
LG4
Years: 1980-1987
The LG4 was the "low output" 305 cu in (5 L) (compared to the L69). It produced 150 hp (112 kW)-170 hp (127 kW) and 240 lb·ft (325 N·m)-250 lb·ft (339 N·m). The addition of a knock sensor for the engine management system in 1985 allowed an increase in compression and a more aggressive spark timing map in the ECM. As a result power increased for the 1985 models to 165 hp (123 kW) from the 150 hp (112 kW) rating in 1984.
L69
Years: 1983-1986
The L69 was the last true H.O. engine. The High Output 5 L (305 cu in) , featuring higher compression of 9.5:1 with heads of the to-be-discontinued LU5 Cross-Fire fuel injection engine, and utilizing camshaft and 4" catalytic converter of the 5.7 L (350 cu in) L83 which was used on the Corvette of 1982 and 1984. Complete with a 2.75 inch exhaust system, topped by a recalibrated 4-barrel carburetor, dual snorkel air cleaner assembly, aluminum intake manifold, aluminum flywheel, electric cooling fan, and furthermore a knock sensor including more aggressive spark timing, this engine produced 190 hp (142 kW) @ 4800 and 240 lb·ft (325 N·m) of torque @ 3200 rpm. In most cases, being mated to a 3.73 or 3:42 ratio limited slip rear axle and a T5 5-speed or 700R4 automatic, this engine provided its driver with a wide range of rpm to play in.
LE9
Years: 1981-1986
The LE9 5 L (305 cu in) was the truck/van version of the High Output 305. It also had flattop pistons for a 9.5:1 compression ratio, the "929" truck 350 camshaft for more torque, 14022601 casting heads featuring 1.84/1.50" valves and 53 cc chambers, a specially calibrated 4bbl Q-Jet, the hybrid centrifugal/vacuum advance distributor with ESC knock sensor setup, and lower restriction exhaust. The engine made 210 hp (157 kW) @ 4,600 and 250 lb·ft (339 N·m) @ 2,000 rpm.
L03
Years: 1987-95
The L03 was the "low output" 5 L (305 cu in) (compared to the 305 TPI LB9). It produced 170 hp (127 kW) and 255 lb·ft (346 N·m) of torque (190 hp (142 kW) at 4,400 rpm and 275 lb·ft (373 N·m) at 2,400 in 1993-1995 GM trucks). This engine used throttle-body fuel injection. The TBI uses a unique injector firing scheme, for every rotation of the engine, each injector fired twice.
LB9
Years: 1985-1992
Introduced in 1985, the LB9 was the first Chevrolet small block to have tuned-port fuel injection (TPI). It was introduced with 215 hp (160 kW) and 275 lb·ft (373 N·m) and varied between 190 hp (142 kW)-230 hp (172 kW) (with 275 lb·ft (373 N·m)-300 lb·ft (407 N·m) of torque) over the years offered. It was an option on all 1985-1992 Chevrolet Camaro & Pontiac Firebird models.
350
Not to be confused with Buick V8 engine, Oldsmobile V8 engine, or Pontiac V8 engine.
The first generation of Chevrolet small-blocks began with the 1955 Chevrolet 265 cu in (4.3 L) V8. But it was the 350 cu in (5.7 L) series that came to be emblematic of the Chevrolet small block V8 engine. The engine's physical dimensions (oversquare 4.00-inch bore and 3.48-inch stroke, 102 mm by 88 mm) are nearly identical to the 400 hp (298 kW) LS2 engine of today, but much has changed. It is by far the most widely used Chevrolet small-block; it has been installed in everything from station wagons to sports cars, in commercial vehicles, and even in boats and (in highly modified form) airplanes.
First usage of the 350 was in the 1967 Chevrolet Camaro and 1968 Nova producing 295 horsepower (gross); other Chevrolet vehicle lines followed suit in the year 1969.
The GM Goodwrench 350 crate engine comes in several variations. The lowest priced uses the pre-1986 four-bolt casting molds with two dipstick locations; pre-1980 on the driver's side and post-1980 on the passenger's side. This engine was produced in Mexico since 1981 as the Targetmaster 350, and now the GM Goodwrench 350.
ZQ3
Years: 1969, 1970, 1972-1975
The ZQ3 was the standard engine in the 1969-1970 Chevrolet Corvette. It was a 300 hp (224 kW) version of the 350 cu in (5.7 L) small-block, with 10.25:1 compression and hydraulic lifters. It used a Rochester "4MV" Quadra-Jet 4-barrel carburetor. This was the first block produced that featured the larger 2.45 inch main bearing versus the older 2.30 inch main bearing in 1968/1969.
The 1969 ZQ3 produced 200 hp (149 kW) and 300 lb·ft (407 N·m) with 8.5:1 compression, dropping another 10 hp (7 kW) in 1973. 1975 saw the ZQ3 at 165 hp (123 kW) and 255 lb·ft (346 N·m).
L46
Years: 1969, 1970
The L46 was an optional engine on the 1969-1970 Chevrolet Corvette. It was a 350 hp (261 kW), 380 lb·ft (515 N·m) version of the ZQ3 with higher 11:1 compression.
LT-1
LT-1 from a 1970 Chevrolet Camaro Z28
Years: 1970-1972
The LT-1 was the ultimate 350 cu in (5.7 L) V8, becoming available in 1970. It used solid lifters, 11:1 compression, a high-performance camshaft, and a Holley four-barrel carburetor on a special aluminum intake to produce 370 hp (276 kW) and 380 lb·ft (515 N·m). It was available on the Corvette and Camaro Z28. Power was down in 1971 to 330 hp (246 kW) and 360 lb·ft (488 N·m) with 9:1 compression, and again in 1972 (the last year of the LT-1) to 255 hp (190 kW) and 280 lb·ft (380 N·m).
There was also a later small-block engine called the "LT1".
L48
Years: 1967-1980
The L-48 is the original 350 cu in (5.7 L), available only in the Camaro or Chevy II/Nova in '67 & '68. In '69 it was used in almost everything; Camaros, Corvettes, Impalas, Chevelles & Novas. From '75-'80 it was available only in the Corvette. L-48's use a Hyd Cam, 4bbl Qjet, Cast pistons, 2 bolt main caps, "Pink" Rods, #0014 Blocks & #993 heads. Power output ranges from 300HP(gross) down to 175HP(net).
The L48 was the standard engine in the 1971 Chevrolet Corvette. It produced 270 hp (201 kW) and 360 lb·ft (488 N·m) with an 8.5:1 compression ratio.
The 1976-1979 L48 was the standard Corvette engine and produced 180 hp (134 kW) and 270 lb·ft (366 N·m). The 1980 L48 stood at 190 hp (142 kW) and 280 lb·ft (380 N·m) from 8.2:1 compression.
In 1972 the only way to get a L48 (4bbl V8) in a Chevy Nova was to get the Super Sport Package. This is indicated by the 5th digit in the VIN being a "K". 1972 was the only year you could verify the Super Sport package by the VIN.
In 1973 the "L-48" had cold air induction (throttle activated) and developed 190 hp (142 kW) (net). Beginning in 1974 the hp was reduced for several years until it reached a low of 165 hp (123 kW) (net) in 1975, before rising again.
L82
Years: 1973-1980
The 1973-1974 L82 was a "performance" version of the 350 producing 250 hp (186 kW) and 285 lb·ft (386 N·m) from 9:1 compression. It was down to 205 hp (153 kW) and 255 lb·ft (346 N·m) for 1975. It was the optional engine again in 1976-1977, producing 5 hp (4 kW) more. The 1978 L82 recovered somewhat, producing 220 hp (164 kW) and 260 lb·ft (353 N·m), and then 5 hp (4 kW) and 10 lb·ft (14 N·m) more for 1979. 1980 saw yet another 10 hp (7 kW) and 15 lb·ft (20 N·m).
L81
Years: 1981
The L81 was the only 5.7 L (350 cu in) Corvette engine for 1981. It produced 190 hp (142 kW) and 280 lb·ft (380 N·m) from 8.2:1 compression, exactly the same as the 1980 L48, but added computer control spark advance, replacing the vacuum advance.
L83
Years: 1982, 1984
The 1982 L83 was again the only Corvette engine (and only available with an automatic transmission) producing 200 hp (149 kW) and 285 lb·ft (386 N·m) from 9:1 compression. This was again the only engine on the new 1984 Vette, at 205 hp (153 kW) and 290 lb·ft (393 N·m). The L83 added Cross-Fire fuel injection (twin throttle-body fuel injection).
L98
For the new Generation IV V8, see GM L98.
Years: 1985-1992
The new 1985 L98 added tuned-port fuel injection "TPI", which produced 230 hp (172 kW) and 330 lb·ft (447 N·m). It was standard on all 1985-1991 Corvettes (rated at 230 hp (172 kW)-250 hp (186 kW) and 330 lb·ft (447 N·m)-350 lb·ft (475 N·m)). Optional on 87-92 Chevrolet Camaro & Pontiac Firebird models (rated at 225 hp (168 kW)-245 hp (183 kW) and 330 lb·ft (447 N·m)-345 lb·ft (468 N·m)) 1987 versions had 10 hp (7 kW) and 15 lb·ft (20 N·m) more thanks to 9.5:1 compression. Compression was up again in 1991 to 10:1 but output stayed the same.
LM1
The LM1 is the base 5.7 L (350 cu in) with a 4-barrel carburetor (usually with a Rochester Quadrajet) in passenger cars until 1988. Throughout its lifespan, it received either a points, electronic, and/or computer-controlled spark system, to conventional and feedback carburetors.
LM1s were superseded with the LO5 powerplant after 1988.
L05
The L05 was introduced in 1987 for use in Chevrolet/GMC trucks in both the GMT400 (introduced in April 1987 as 1988 models) and the R/V series trucks such as the K5 Blazer, Suburban, and rounded-era pickups formerly classed as the C/K until 1996 which includes chassis cabs and 4-door crew cabs. Although usage was for trucks, vans, and 9C1-optioned Caprices, the L05 was also used with the following vehicles:
* 1992/1993 Buick Roadmaster sedan and station wagon
* 1991/1992 Cadillac Brougham (optional engine)
* 1993 Cadillac Fleetwood
* 1992/1993 Chevrolet Caprice Wagon (optional engine)
* 1993 Chevrolet Caprice LTZ
* 1992 Oldsmobile Custom Cruiser Wagon (optional engine)
L05 usage was replaced by the GM LT1 after 1993 in GM B-Bodies until production ceased in 1996.
In mid 1996 the L05 was equipped with Vortec heads used in the 1996 G30.
L31
The L31 replaced the LO5 in 1996 - known as the Vortec 5700. Known as the GEN 1+, this was the final incarnation of the 1955-vintage small block, ending production in 2005 with the last vehicle being a Kodiak/Topkick HD truck. Volvo Penta and Mercury Marine still produces the L31. The "MARINE" intake is a potential upgrade for L31 trucks.
Only brief?
Subject: Re: Does it feel like the mid 10s yet?
Written By: whistledog on 05/27/14 at 12:44 pm
2014 is 2014.
Are you serious? 2014 is just a shell of 2013, but 2010 is what it really is. I analyze 2014 more as 2010 than I do 2011. It's the obvious choice
Subject: Re: Does it feel like the mid 10s yet?
Written By: Philip Eno on 05/27/14 at 12:54 pm
2014 is 2014.
There is a few days difference!
Subject: Re: Does it feel like the mid 10s yet?
Written By: Howard on 05/27/14 at 7:43 pm
Are you serious? 2014 is just a shell of 2013, but 2010 is what it really is. I analyze 2014 more as 2010 than I do 2011. It's the obvious choice
Jesus! Here we go again! ::)
Subject: Re: Does it feel like the mid 10s yet?
Written By: dnt88 on 05/27/14 at 10:00 pm
I understand there will always be different styles of all types of music, but I was just telling this guy that I don't hear the electro-pop of 2008-11 anymore. In fact, last year I heard Lady Gaga's Applause, Katy Perry's Roar and it both sounded way different than their earlier songs. Also, I have heard Pharrell's Happy and Brand New songs and they don't sound like anything from 2010-11 in that case. Not only that, Daft Punk's Get Lucky and Move Yourself to Dance don't even sound like a 2010 or 2011 song either. All those songs I listed have a different EDM tune to it than 2010-11's electropop tune.
EDM might have evolved a little, but that doesn't mean it has become a different genre of music. Disco from the mid 70's was very different than disco from the late 70's, but it's disco anyway. Besides, many songs still have the 08-11 electropop sound, like pitbull's we are one, gaga's g.u.y. and inna's cola song and those songs are popular in this moment.
You can delude yourself into thinking 2014 is different than the early 2010's musically, but unfortunately that music is not going anywhere. Maybe EDM will fade away in the late 10's and even disco lasted like 7-8 years, so EDM's end might come soon. Let's hope rock or another genre will take its place. :)
Subject: Re: Does it feel like the mid 10s yet?
Written By: mxcrashxm on 05/27/14 at 10:41 pm
EDM might have evolved a little, but that doesn't mean it has become a different genre of music. Disco from the mid 70's was very different than disco from the late 70's, but it's disco anyway. Besides, many songs still have the 08-11 electropop sound, like pitbull's we are one, gaga's g.u.y. and inna's cola song and those songs are popular in this moment.
You can delude yourself into thinking 2014 is different than the early 2010's musically, but unfortunately that music is not going anywhere. Maybe EDM will fade away in the late 10's and even disco lasted like 7-8 years, so EDM's end might come soon. Let's hope rock or another genre will take its place. :)
It is half way. I mean there are lots of indie artists out there. Also, isnt Dubstep still one of the popular forms of EDM?
Subject: Re: Does it feel like the mid 10s yet?
Written By: Philip Eno on 05/28/14 at 5:57 am
LMFAO! Are you living under a rock??? EDM is definitely not gone. Just watch the top 50 hits on youtube for may 2014 and most are EDM songs. ::) Even the world cup's main song is EDM.
And dead at people saying 2009 is more 2000's than 2010's... The economy of that year sucked very much, just like the 2010's... And as far as I remember hip hop and R&B were no longer popular in 2009. Movies and music are pretty much the same. ::) Katy perry and gaga are still popular and people are still clinging to the retro style fashion of the late 2000's. The 2000's were nothing like 2009. I think the last true year of the 2000's was 2007 and part of 2008.
Anyway... going back to the OP's question... this decade is very homogenic... for me it feels like the early 2010's, but that's because things have not changed that much. There are no new styles of fashion or music. Movies and tv shows are the same and America still has the same presidents and politicians and the same economic problems. That's why it doesn't feel like the mid 2010's, but we're in the mid 2010's so that's what it feels like, a washed-up version of the early 2010's with the same tired things. ::)j
“Time flies like an arrow; fruit flies like a banana.”
― Anthony G. Oettinger
Subject: Re: Does it feel like the mid 10s yet?
Written By: XYkid on 05/28/14 at 6:26 am
LMFAO! Are you living under a rock??? EDM is definitely not gone. Just watch the top 50 hits on youtube for may 2014 and most are EDM songs. ::) Even the world cup's main song is EDM.
And dead at people saying 2009 is more 2000's than 2010's... The economy of that year sucked very much, just like the 2010's... And as far as I remember hip hop and R&B were no longer popular in 2009. Movies and music are pretty much the same. ::) Katy perry and gaga are still popular and people are still clinging to the retro style fashion of the late 2000's. The 2000's were nothing like 2009. I think the last true year of the 2000's was 2007 and part of 2008.
Anyway... going back to the OP's question... this decade is very homogenic... for me it feels like the early 2010's, but that's because things have not changed that much. There are no new styles of fashion or music. Movies and tv shows are the same and America still has the same presidents and politicians and the same economic problems. That's why it doesn't feel like the mid 2010's, but we're in the mid 2010's so that's what it feels like, a washed-up version of the early 2010's with the same tired things. ::)j
Look at the fashion of 2009, or even 2010 and 2011, and there's many differences.
In 2011, the whole scene kid look was still in. Lots of people still wore neon colours and flamboyant fashions, and 80s nostalgia was still in. Around 2012, 90s nostalgia began to get into full swing and a more minimalistic, ironic, anti-fashion type look became popular, and still is today. Skinny jeans are also beginning to fade out of popularity, especially for guys.
Subject: Re: Does it feel like the mid 10s yet?
Written By: KatanaChick on 05/28/14 at 9:29 am
EDM might have evolved a little, but that doesn't mean it has become a different genre of music. Disco from the mid 70's was very different than disco from the late 70's, but it's disco anyway. Besides, many songs still have the 08-11 electropop sound, like pitbull's we are one, gaga's g.u.y. and inna's cola song and those songs are popular in this moment.
You can delude yourself into thinking 2014 is different than the early 2010's musically, but unfortunately that music is not going anywhere. Maybe EDM will fade away in the late 10's and even disco lasted like 7-8 years, so EDM's end might come soon. Let's hope rock or another genre will take its place. :)
EDM and rock are totally different things though, and you shouldn't hear them on the same station.
Subject: Re: Does it feel like the mid 10s yet?
Written By: whistledog on 05/28/14 at 11:44 am
Jesus! Here we go again! ::)
Well there's no need to swear
Subject: Re: Does it feel like the mid 10s yet?
Written By: Philip Eno on 05/28/14 at 1:39 pm
https://scontent-b-lhr.xx.fbcdn.net/hphotos-xpf1/t1.0-9/10291046_803623229647735_8498637671551839855_n.jpg
Subject: Re: Does it feel like the mid 10s yet?
Written By: Howard on 05/28/14 at 2:19 pm
Well there's no need to swear
Sorry. :)
Subject: Re: Does it feel like the mid 10s yet?
Written By: Philip Eno on 05/28/14 at 3:57 pm
http://sd.keepcalm-o-matic.co.uk/i/keep-calm-and-no-swearing.png
Subject: Re: Does it feel like the mid 10s yet?
Written By: dnt88 on 05/28/14 at 6:33 pm
EDM and rock are totally different things though, and you shouldn't hear them on the same station.
So??? What does that have to do with my post? Rock was one of the mainstream genres of music in the 90's and 00's, but it is no longer mainstream in the 10's. And radio stations used to play both pop and rock music, they were not restricted to just one genre of music, there was no musical apartheid. ::) And I always hear both EDM and rock music being played on my favorite music stations, so what you are saying is ludicrous and prejudiced. And why should I not hear them on the same station? Is there any law against it? Are you 12 or what?
Subject: Re: Does it feel like the mid 10s yet?
Written By: dnt88 on 05/28/14 at 6:45 pm
Look at the fashion of 2009, or even 2010 and 2011, and there's many differences.
In 2011, the whole scene kid look was still in. Lots of people still wore neon colours and flamboyant fashions, and 80s nostalgia was still in. Around 2012, 90s nostalgia began to get into full swing and a more minimalistic, ironic, anti-fashion type look became popular, and still is today. Skinny jeans are also beginning to fade out of popularity, especially for guys.
I still see a lot of guys wearing skinny jeans (today I saw aprox. 9 of them). People still wear neon colors, specially pink and yellow. 90's fashion revival did not start in 2012, it started in late 2009 - early 2010 with flannel shirts and other kinds of 90's clothing, and even if it had started in 2012, that still is considered early 2010's (mid 2010's started this year). 80's nostalgia is not over as far as I can see, many music videos, songs, movies and fashions are still being influenced by that decade. What you're saying is completely ridiculous, it's like saying that fashion from 1964 is different than fashion from 1962, 1961 or 1960. No, it's not... Considering they are just a few years apart, there might be some slight changes, but they are not different. It's not like 2010 was a decade ago. ::)
Subject: Re: Does it feel like the mid 10s yet?
Written By: Jessica on 05/28/14 at 6:55 pm
A BRIEF HISTORY OF THE CHEVROLET SMALL-BLOCK V-8.
Chevrolet's small-block V8 is a famous automobile engine. Nicknamed "mouse motor" (opposed to the big block engine, nicknamed "rat") for its compact dimensions compared to other V8 engines of the time, production began in 1955 with the 265 engine. By 1957 it had grown to 283 cu in (4.6 L), and with the optional Rochester mechanical fuel injection, it became one of the first production engines ever to make one horsepower per cubic inch. This engine was used to power the Corvette, and the Bel Air at that time. It would later be extended to other vehicles as well, and replace the old style 265 V8s. The displacement changed over the years, eventually reaching 400 cu in (6.6 L), but none caught on like the 350 cu in (5.7 L) small-block. This engine is still in production today at General Motors Toluca, Mexico plant (primarily for the GM over-the-counter Goodwrench powerplants), but is no longer offered in current model year vehicles since the year 2004. Its production numbers were impressive, with more than 90,000,000 built. It has been produced in carbureted, mechanical fuel injection, and electronic fuel injection forms.
From 1955-74, the small-block engine was known as the "Turbo-Fire V8".
Although Buick, Cadillac, Oldsmobile, and Pontiac also designed V8 engines (see list of GM engines), it was Chevrolet's 350 cu in (5.7 L) small-block that became the GM corporate standard. Over the years, every American General Motors division except Saturn used the Chevrolet small-block, and its descendants (see GM LT engine and GM LS engine) continue as the company's mainstream V8 design today.
The small-block was on the Ward's 10 Best Engines of the 20th Century list.
Chevrolet tested the small-block twice with no water and no oil at wide-open throttle. The first time it lasted an hour and 15 minutes and the second time it lasted two hours.
Major Versions
Generation 1
The original design of the small block remained remarkably unchanged for its production run, which began in 1955 and ended, in passenger vehicles, in 2003. The engine is still being built today for many aftermarket applications, both to replace worn-out older engines and also by many builders as high-performance applications. There were, however many minor changes made to the engine over the years; these changes are listed below.
* 1955 - The first year of introduction in 265 cu in (4.3 L) only. As was fairly common for the time, no provision for an oil filter was included in the engine design.
* 1956 - Oil filtration was introduced, using a sock style filter in a canister.
* 1957 - The engine came with only front mounts, the side mount bosses were present but not drilled and tapped leaving its retrofitting problematic.
* 1962 - The block's cylinder wall casting was revised to allow four inch bores. Previously, only certain years of the 283 engine (1958-1962) could be bored safely to four inches.
* 1968 - The main journal diameter was increased to 2.45 in from 2.30 in and the connecting rod journal diameter was increased to 2.10 in from 2.00 in. This allowed the use of cast iron crankshafts as the previous parts were made of forged steel. The rod bolts were changed from 11/32 in. diameter to 3/8 inch. Additionally, the canister/sock style oil filter was now converted to use spin on filters. The oil fill location was moved from a tube on the front of the intake manifold to a cap on either side valve cover.
* 1987 - The valve cover surfaces were changed such that cylinder head mounting lip was raised and the bolt location was moved from 4 bolts on the perimeter, to 4 bolts down the centerline of the valve cover (this design debuted on the Corvette in 1985, and Chevrolet 4.3 L the year before). The rear main seal was changed from a 2-piece rubber design to a 1-piece rubber design that used a mounting appliance to hold it in place. This necessitated a change in the flywheel/flexplate bolt pattern as well. Also changed were the mounting angles of the center 2 bolts on each side of the intake manifold (from 90 degrees to 73 degrees) and the lifter bosses were increased in height to accept roller lifters. The alloy heads for use in the Corvette still retain the non-angled bolts (center 2 bolts attaching to the intake). Also all carburetors were done away with and replaced by TBI (throttle-body injection) fuel injection that acts some what like a carburetor.
* 1996 - This was the last change for the Generation I engine, and continued through the end of the production run in 2003; all 1997-2003 Generation I engines were Vortec truck engines. The cylinder heads were redesigned using improved ports and combustion chambers similar to those in the Generation II LT1. This change resulted in significant power increases.
SB2 and SB2.2
(Small Block/second generation) This engine was produced from 1996 to the present for racing applications only. The cylinder heads were redesigned and the lifter bores were offset. The valve sequence for each head was changed from the traditional E-I-I-E-E-I-I-E to a new I-E-I-E-E-I-E-I and because of this the camshaft was redesigned.
Generation II
LT1 from a 1993 Chevrolet Camaro Z28
See the GM LT engine page for more information on the Generation II small-block V8s, which differ mainly in their reverse-flow cooling system.
Generation III / IV
LS1 from a 1998 Chevrolet Camaro Z28
See the GM LS engine page for more information on the current family of General Motors small-block V8s.
Early Small Blocks
The first small block Chevrolet V-8 was a 265 cu in (4.3 L) engine that was developed in 1955 for the Corvette. Displacement and power eventually reached 327 cu in (5.4 L) and 375 hp (280 kW) (in prototypes) before the Corvette switched to Chevrolet big-block power. Although less powerful than big blocks, small block engines have remained popular due to their lower cost (including the cost of performance add-ons) and solid performance and reliability.
265
The 265 cu in (4.3 L) V8 was the first Chevrolet small block. Designed by Ed Cole's group at Chevrolet, it filled the power gap in the 1955 Corvette lineup, producing an impressive 250 hp (186 kW). The little engine went from drawings to production in just 15 weeks. Besides its compact dimensions, the small-block was known for its novel green-sand foundry construction process.
Dimensions were oversquare - 3.75 in (95 mm) bore and 3 in (76 mm) stroke. The small-block's 4.4 in (111.8 mm) bore spacing would continue in use for decades. It was a pushrod cast-iron engine with hydraulic lifters and a 2-barrel or 4-barrel Rochester carburetor. The 1955 conventional passenger car version produced 162 hp (121 kW) with a 2-barrel carburetor, or could be upgraded at extra cost to a "Power Pack" version conservatively rated at 180 hp (134 kW) with a four-barrel Rochester and dual exhaust. The first production year of this engine had no provision for oil filtration built into the block; however, an add-on filter mounted on the thermostat housing was installed during production. Due to the lack of adequate oil filtration provisions, the '55 model year block is typically only desirable to period collectors.
The 1956 Corvette introduced three versions of this engine - 210 hp (157 kW), 225 hp (168 kW) with twin 4-barrel carbs, and 240 hp (179 kW) with a high-lift cam.
* 1955, 1956 Chevrolet Corvette
* 1955 Chevrolet, 165 hp (123 kW) (2-barrel) and 195 hp (145 kW) (4-barrel)
283
The 283 cu in (4.6 L) V8 was introduced in 1957. It was a version of the 265 cu in (4.3 L) with a larger bore at 3.87 in (98 mm). There were five different versions ranging from 185 hp (138 kW) to 283 hp (211 kW) depending on whether a single carb, twin carbs, or fuel injection was used. Power was up a bit each year for 1958, 1959, and 1960.
The 1957 engine featured Ramjet mechanical fuel injection, allowing the engine to produce 1 hp (1 kW) per cubic inch, an impressive feat at the time. For 1961, an amazing 315 hp (235 kW) was available from this unit.
* 1957-1962 Chevrolet Corvette
302
Chevrolet produced a special 302 cu in (4.9 L) engine for Trans Am racing from 1967-1969. It was the product of placing the 3-inch stroke crankshaft from a 283 into a 4-inch bore 327 block. This engine was mostly used in the first-generation Camaro Z28. Just over 100 DZ block 302 engines were used in the, unique to South Africa, Chevrolet Firenza Can Am. Conservatively rated at 290 hp (216 kW), actual output was around 360 hp (268 kW). This block is one of 3 displacements that underwent a transformation for the 1968/1969 period when the main bearing size was increased from 2.30 in to 2.45 in.
307
A 307 cu in (5 L) version was produced from 1968 through 1973. Engine bore was 3.875 inches (98.4 mm) with a 3.25-inch (82.6 mm) stroke.
The 307 replaced the 283 in Chevrolet cars and produced 200 hp (149 kW) SAE gross at 4600 rpm and 300 lb·ft (407 N·m) of torque at 2400 rpm in the 1960s. The later emissions-modified versions produced just 115 hp (86 kW) SAE net, giving the engine one of the lowest power-per-displacement ratings of all time. Chevrolet never produced a high-performance version of this engine, though they did produce, for Outboard Marine Corporation, a high-performance marinized 307, rated at 235 hp (175 kW) and 245 hp (183 kW) SAE gross, depending on year, that shipped with the Corvette/Z-28's cast aluminum valve covers and Rochester QuadraJet carb. Chevy also built other versions of the OMC 307 rated at 210 hp (157 kW), 215 hp (160 kW) and 225 hp (168 kW) SAE gross.
One of the biggest myths about the 307 is that all the blocks were cast with a very low nickel content. However, some 307 blocks, such as casting number 3970020 with suffix VxxxxTHA (x's in place for date), had 010 and 020 stamped under the timing chain cover indicating high tin and nickel content.
327
The 327 cu in (5.4 L) V8, introduced in 1962, had a bore and stroke of 4 in (102 mm) by 3.25 in. Power ranged from 250 hp (186 kW) to 375 hp (280 kW) depending on the choice of carburetor or fuel injection, camshaft, cylinder heads, pistons and intake manifold. In 1962, the Duntov solid lifter cam versions produced 340 hp (254 kW), 344 lb·ft (466 N·m) with single Carter 4-brl, and 360 hp (268 kW), 352 lb·ft (477 N·m) with Rochester mechanical fuel injection. In 1964, horsepower increased to 365 hp (272 kW) for the now dubbed L79 version, and 375 hp (280 kW) for the fuel injected L84 respectively, making the L84 the most powerful naturally aspirated, single-cam, production small block V8 until the appearance of the 385 hp (287 kW), 385 lb·ft (522 N·m) Generation III LS6 in 2001. * L79, L84 1963-1965; Chevrolet Corvette. This block is one of three displacements that under went a major change in 1968/1969 when the main bearing size was increased from 2.30 to 2.4 inches (58.4–61.0 mm). In 1965 the SS malibu choice of the 327/350 hp know as the "L79", with a aluminum manifold, holley squarebore carb, chrome valve covers, a huge 8" balancer, huge 2.02" intake valves and could only be ordered with a 4 speed trans.
400
A 400 cu in (6.6 L) small-block was introduced in 1970 and produced for 10 years. It had a 4.125-inch (104.8 mm) bore and a 3.75-inch (95.3 mm) stroke. Initial output was 265 hp (198 kW) and was only available equipped with a 2-barrel carburetor. In 1974 a 4-barrel version of the 400 was introduced,while the 2-barrel version stopped production in 1975. 1976 was the last year that the 400 was used in a Chevrolet Passenger car, available in both the A-Body and B-Body line. While popular with circle-track racers, the engine was prone to cooling troubles if cylinder heads without steam holes were used. they mostly put out 250 hp stock.
Later Small Blocks
This section documents the odd-size small blocks developed after the 350 appeared in 1969. Many of these basic blocks are variations of the 350 design.
262
The 262 was a 262 cu in (4.3 L) 90° pushrod V8 with an iron block and heads. Bore and stroke were 3.67 in (93 mm) by 3.10 in (78.7 mm). Power output for 1975 was 110 hp (82 kW) and 195 lb·ft (264 N·m). The 262 was underpowered and was replaced by the 305 the following year.
This was Chevrolet's second 4.3 L-displacement powerplant; two other Chevrolet engines displaced 4.3 L: the Vortec 4300 (based on the Chevrolet 350, with two cylinders removed), and a derivative of the LT1 known as the L99 (using the 305's 3.736-inch bore, 5.94-inch connecting rods, and a 3-inch crankshaft stroke).
This engine was used in the following cars:
* 1975-1976 Chevrolet Monza
* 1975 Chevrolet Nova
267
The 267 was introduced in 1979 for GM F-Body(Camaro), G-bodies (Chevrolet Monte Carlo, El Camino, and Malibu Classic) and also used on GM B-body cars (Impala and Caprice models). The 267 cu in (4.4 L) had the 350's crankshaft stroke of 3.48" and the smallest bore of any small-block, 3.500 in. The 3.500" bore was also used on the 200 cu in (3.3 L) V6, which was introduced a year earlier. (The 200 was a Chevrolet V6 engine based on the small block with the #3 and #6 cylinders removed).
It was available with a Rochester Dualjet 210 - effectively a Rochester Quadrajet with no rear barrels. After 1980, electronic feedback carburetion was used on the 267.
While similar in displacement to the other 4.3-4.4 L V8 engines produced by General Motors (including the Oldsmobile 260 and Pontiac 265, the small bore 267 shared no parts with the other engines and was phased out after the 1982 model year due to inability to conform to emission standards. Chevrolet vehicles eventually used the 305 cu in (5 L) as its base V8 engine.
305
The 305 variant of the small-block Chevrolet had a displacement of 305 cu in (5 L) with a 3.736-inch (95 mm) bore and 3.48-inch (88.4 mm) stroke. The 262 was considered underpowered for use in vehicles with a wheelbase greater than 110 inches, so GM engineers decided to increase the bore diameter from 3.671 to 3.736 inches (93.2–94.9 mm) and increase the stroke from 3.10 to 3.48 inches (78.7–88.4 mm) (from the 350). Some performance enthusiasts have noted a marked resistance to performance upgrades on the 305 because of its small bore, poor selection of aftermarket cylinder heads, and the relatively high availability of 350 cu in (5.7 L) engines.
Induction systems for the 305 included carburetors (both 2 and 4-barrel), throttle-body injection (TBI), tuned-port fuel injection (TPI), and sequential fuel injection (GM Vortec).
After 1996, its usage was limited to light trucks and SUVs as the Vortec 5000.
Year hp (kW) lb·ft (N·m)
1976 140 250 w/2bbl.
1977 145 245 w/2bbl.
1978 140 240 w/2bbl.
1978 160 235 w/4bbl.
1979 130 245 w/2bbl.
1979† 125 235 w/2bbl.
1980 155 240 w/4bbl.
1981 150 240 w/4bbl
† California Emissions
The 305 was used in the following cars:
* 1977-1993 Chevrolet Caprice (includes Impala)
* 1977-1986 Pontiac Parisienne
* 1976-1979 Chevrolet Monza
* 1976-1979 Chevrolet Nova (also GM X-body clones after 1976)
* 1976-1992 Chevrolet Camaro
* 1976-1988 Chevrolet Malibu, Chevrolet El Camino, and Chevrolet Monte Carlo
* 1978-1992 Pontiac Firebird
* 1978-1980 Oldsmobile Cutlass (US Market only, Canadian market 1978-1987)
* 1991-1992 Oldsmobile Custom Cruiser
* 1981-1987 Pontiac Grand Prix
* 1975-1979 Buick Skylark
* 1977-2003 Chevrolet/GMC Trucks, SUVs, Vans
* 1991-1992 Cadillac Brougham
LG3
Years:1976-1980
Dualjet 2 bbl carb version with 8.5:1 compression.
LG4
Years: 1980-1987
The LG4 was the "low output" 305 cu in (5 L) (compared to the L69). It produced 150 hp (112 kW)-170 hp (127 kW) and 240 lb·ft (325 N·m)-250 lb·ft (339 N·m). The addition of a knock sensor for the engine management system in 1985 allowed an increase in compression and a more aggressive spark timing map in the ECM. As a result power increased for the 1985 models to 165 hp (123 kW) from the 150 hp (112 kW) rating in 1984.
L69
Years: 1983-1986
The L69 was the last true H.O. engine. The High Output 5 L (305 cu in) , featuring higher compression of 9.5:1 with heads of the to-be-discontinued LU5 Cross-Fire fuel injection engine, and utilizing camshaft and 4" catalytic converter of the 5.7 L (350 cu in) L83 which was used on the Corvette of 1982 and 1984. Complete with a 2.75 inch exhaust system, topped by a recalibrated 4-barrel carburetor, dual snorkel air cleaner assembly, aluminum intake manifold, aluminum flywheel, electric cooling fan, and furthermore a knock sensor including more aggressive spark timing, this engine produced 190 hp (142 kW) @ 4800 and 240 lb·ft (325 N·m) of torque @ 3200 rpm. In most cases, being mated to a 3.73 or 3:42 ratio limited slip rear axle and a T5 5-speed or 700R4 automatic, this engine provided its driver with a wide range of rpm to play in.
LE9
Years: 1981-1986
The LE9 5 L (305 cu in) was the truck/van version of the High Output 305. It also had flattop pistons for a 9.5:1 compression ratio, the "929" truck 350 camshaft for more torque, 14022601 casting heads featuring 1.84/1.50" valves and 53 cc chambers, a specially calibrated 4bbl Q-Jet, the hybrid centrifugal/vacuum advance distributor with ESC knock sensor setup, and lower restriction exhaust. The engine made 210 hp (157 kW) @ 4,600 and 250 lb·ft (339 N·m) @ 2,000 rpm.
L03
Years: 1987-95
The L03 was the "low output" 5 L (305 cu in) (compared to the 305 TPI LB9). It produced 170 hp (127 kW) and 255 lb·ft (346 N·m) of torque (190 hp (142 kW) at 4,400 rpm and 275 lb·ft (373 N·m) at 2,400 in 1993-1995 GM trucks). This engine used throttle-body fuel injection. The TBI uses a unique injector firing scheme, for every rotation of the engine, each injector fired twice.
LB9
Years: 1985-1992
Introduced in 1985, the LB9 was the first Chevrolet small block to have tuned-port fuel injection (TPI). It was introduced with 215 hp (160 kW) and 275 lb·ft (373 N·m) and varied between 190 hp (142 kW)-230 hp (172 kW) (with 275 lb·ft (373 N·m)-300 lb·ft (407 N·m) of torque) over the years offered. It was an option on all 1985-1992 Chevrolet Camaro & Pontiac Firebird models.
350
Not to be confused with Buick V8 engine, Oldsmobile V8 engine, or Pontiac V8 engine.
The first generation of Chevrolet small-blocks began with the 1955 Chevrolet 265 cu in (4.3 L) V8. But it was the 350 cu in (5.7 L) series that came to be emblematic of the Chevrolet small block V8 engine. The engine's physical dimensions (oversquare 4.00-inch bore and 3.48-inch stroke, 102 mm by 88 mm) are nearly identical to the 400 hp (298 kW) LS2 engine of today, but much has changed. It is by far the most widely used Chevrolet small-block; it has been installed in everything from station wagons to sports cars, in commercial vehicles, and even in boats and (in highly modified form) airplanes.
First usage of the 350 was in the 1967 Chevrolet Camaro and 1968 Nova producing 295 horsepower (gross); other Chevrolet vehicle lines followed suit in the year 1969.
The GM Goodwrench 350 crate engine comes in several variations. The lowest priced uses the pre-1986 four-bolt casting molds with two dipstick locations; pre-1980 on the driver's side and post-1980 on the passenger's side. This engine was produced in Mexico since 1981 as the Targetmaster 350, and now the GM Goodwrench 350.
ZQ3
Years: 1969, 1970, 1972-1975
The ZQ3 was the standard engine in the 1969-1970 Chevrolet Corvette. It was a 300 hp (224 kW) version of the 350 cu in (5.7 L) small-block, with 10.25:1 compression and hydraulic lifters. It used a Rochester "4MV" Quadra-Jet 4-barrel carburetor. This was the first block produced that featured the larger 2.45 inch main bearing versus the older 2.30 inch main bearing in 1968/1969.
The 1969 ZQ3 produced 200 hp (149 kW) and 300 lb·ft (407 N·m) with 8.5:1 compression, dropping another 10 hp (7 kW) in 1973. 1975 saw the ZQ3 at 165 hp (123 kW) and 255 lb·ft (346 N·m).
L46
Years: 1969, 1970
The L46 was an optional engine on the 1969-1970 Chevrolet Corvette. It was a 350 hp (261 kW), 380 lb·ft (515 N·m) version of the ZQ3 with higher 11:1 compression.
LT-1
LT-1 from a 1970 Chevrolet Camaro Z28
Years: 1970-1972
The LT-1 was the ultimate 350 cu in (5.7 L) V8, becoming available in 1970. It used solid lifters, 11:1 compression, a high-performance camshaft, and a Holley four-barrel carburetor on a special aluminum intake to produce 370 hp (276 kW) and 380 lb·ft (515 N·m). It was available on the Corvette and Camaro Z28. Power was down in 1971 to 330 hp (246 kW) and 360 lb·ft (488 N·m) with 9:1 compression, and again in 1972 (the last year of the LT-1) to 255 hp (190 kW) and 280 lb·ft (380 N·m).
There was also a later small-block engine called the "LT1".
L48
Years: 1967-1980
The L-48 is the original 350 cu in (5.7 L), available only in the Camaro or Chevy II/Nova in '67 & '68. In '69 it was used in almost everything; Camaros, Corvettes, Impalas, Chevelles & Novas. From '75-'80 it was available only in the Corvette. L-48's use a Hyd Cam, 4bbl Qjet, Cast pistons, 2 bolt main caps, "Pink" Rods, #0014 Blocks & #993 heads. Power output ranges from 300HP(gross) down to 175HP(net).
The L48 was the standard engine in the 1971 Chevrolet Corvette. It produced 270 hp (201 kW) and 360 lb·ft (488 N·m) with an 8.5:1 compression ratio.
The 1976-1979 L48 was the standard Corvette engine and produced 180 hp (134 kW) and 270 lb·ft (366 N·m). The 1980 L48 stood at 190 hp (142 kW) and 280 lb·ft (380 N·m) from 8.2:1 compression.
In 1972 the only way to get a L48 (4bbl V8) in a Chevy Nova was to get the Super Sport Package. This is indicated by the 5th digit in the VIN being a "K". 1972 was the only year you could verify the Super Sport package by the VIN.
In 1973 the "L-48" had cold air induction (throttle activated) and developed 190 hp (142 kW) (net). Beginning in 1974 the hp was reduced for several years until it reached a low of 165 hp (123 kW) (net) in 1975, before rising again.
L82
Years: 1973-1980
The 1973-1974 L82 was a "performance" version of the 350 producing 250 hp (186 kW) and 285 lb·ft (386 N·m) from 9:1 compression. It was down to 205 hp (153 kW) and 255 lb·ft (346 N·m) for 1975. It was the optional engine again in 1976-1977, producing 5 hp (4 kW) more. The 1978 L82 recovered somewhat, producing 220 hp (164 kW) and 260 lb·ft (353 N·m), and then 5 hp (4 kW) and 10 lb·ft (14 N·m) more for 1979. 1980 saw yet another 10 hp (7 kW) and 15 lb·ft (20 N·m).
L81
Years: 1981
The L81 was the only 5.7 L (350 cu in) Corvette engine for 1981. It produced 190 hp (142 kW) and 280 lb·ft (380 N·m) from 8.2:1 compression, exactly the same as the 1980 L48, but added computer control spark advance, replacing the vacuum advance.
L83
Years: 1982, 1984
The 1982 L83 was again the only Corvette engine (and only available with an automatic transmission) producing 200 hp (149 kW) and 285 lb·ft (386 N·m) from 9:1 compression. This was again the only engine on the new 1984 Vette, at 205 hp (153 kW) and 290 lb·ft (393 N·m). The L83 added Cross-Fire fuel injection (twin throttle-body fuel injection).
L98
For the new Generation IV V8, see GM L98.
Years: 1985-1992
The new 1985 L98 added tuned-port fuel injection "TPI", which produced 230 hp (172 kW) and 330 lb·ft (447 N·m). It was standard on all 1985-1991 Corvettes (rated at 230 hp (172 kW)-250 hp (186 kW) and 330 lb·ft (447 N·m)-350 lb·ft (475 N·m)). Optional on 87-92 Chevrolet Camaro & Pontiac Firebird models (rated at 225 hp (168 kW)-245 hp (183 kW) and 330 lb·ft (447 N·m)-345 lb·ft (468 N·m)) 1987 versions had 10 hp (7 kW) and 15 lb·ft (20 N·m) more thanks to 9.5:1 compression. Compression was up again in 1991 to 10:1 but output stayed the same.
LM1
The LM1 is the base 5.7 L (350 cu in) with a 4-barrel carburetor (usually with a Rochester Quadrajet) in passenger cars until 1988. Throughout its lifespan, it received either a points, electronic, and/or computer-controlled spark system, to conventional and feedback carburetors.
LM1s were superseded with the LO5 powerplant after 1988.
L05
The L05 was introduced in 1987 for use in Chevrolet/GMC trucks in both the GMT400 (introduced in April 1987 as 1988 models) and the R/V series trucks such as the K5 Blazer, Suburban, and rounded-era pickups formerly classed as the C/K until 1996 which includes chassis cabs and 4-door crew cabs. Although usage was for trucks, vans, and 9C1-optioned Caprices, the L05 was also used with the following vehicles:
* 1992/1993 Buick Roadmaster sedan and station wagon
* 1991/1992 Cadillac Brougham (optional engine)
* 1993 Cadillac Fleetwood
* 1992/1993 Chevrolet Caprice Wagon (optional engine)
* 1993 Chevrolet Caprice LTZ
* 1992 Oldsmobile Custom Cruiser Wagon (optional engine)
L05 usage was replaced by the GM LT1 after 1993 in GM B-Bodies until production ceased in 1996.
In mid 1996 the L05 was equipped with Vortec heads used in the 1996 G30.
L31
The L31 replaced the LO5 in 1996 - known as the Vortec 5700. Known as the GEN 1+, this was the final incarnation of the 1955-vintage small block, ending production in 2005 with the last vehicle being a Kodiak/Topkick HD truck. Volvo Penta and Mercury Marine still produces the L31. The "MARINE" intake is a potential upgrade for L31 trucks.
Subject: Re: Does it feel like the mid 10s yet?
Written By: nintieskid999 on 05/28/14 at 9:19 pm
I still see a lot of guys wearing skinny jeans (today I saw aprox. 9 of them). People still wear neon colors, specially pink and yellow. 90's fashion revival did not start in 2012, it started in late 2009 - early 2010 with flannel shirts and other kinds of 90's clothing, and even if it had started in 2012, that still is considered early 2010's (mid 2010's started this year). 80's nostalgia is not over as far as I can see, many music videos, songs, movies and fashions are still being influenced by that decade. What you're saying is completely ridiculous, it's like saying that fashion from 1964 is different than fashion from 1962, 1961 or 1960. No, it's not... Considering they are just a few years apart, there might be some slight changes, but they are not different. It's not like 2010 was a decade ago. ::)
The last of the 00s was around 2007 or so. The 10s began early and I can say that now we're in the midpoint of the decade.
Subject: Re: Does it feel like the mid 10s yet?
Written By: KatanaChick on 05/29/14 at 8:03 am
So??? What does that have to do with my post? Rock was one of the mainstream genres of music in the 90's and 00's, but it is no longer mainstream in the 10's. And radio stations used to play both pop and rock music, they were not restricted to just one genre of music, there was no musical apartheid. ::) And I always hear both EDM and rock music being played on my favorite music stations, so what you are saying is ludicrous and prejudiced. And why should I not hear them on the same station? Is there any law against it? Are you 12 or what?
Why so combative? I didn't have an attitude. I don't know about everywhere, but here and even when travelling, stations were dedicated to one form of music of another. Rock, pop, country, gospel, etc. That's the way it usually is.
Subject: Re: Does it feel like the mid 10s yet?
Written By: Howard on 05/29/14 at 8:15 am
http://sd.keepcalm-o-matic.co.uk/i/keep-calm-and-no-swearing.png
Sorry I lost my temper.
Subject: Re: Does it feel like the mid 10s yet?
Written By: KatanaChick on 05/29/14 at 8:17 am
Sorry I lost my temper.
It happens.
Subject: Re: Does it feel like the mid 10s yet?
Written By: Philip Eno on 05/29/14 at 8:22 am
A BRIEF HISTORY OF THE CHEVROLET SMALL-BLOCK V-8.
Chevrolet's small-block V8 is a famous automobile engine. Nicknamed "mouse motor" (opposed to the big block engine, nicknamed "rat") for its compact dimensions compared to other V8 engines of the time, production began in 1955 with the 265 engine. By 1957 it had grown to 283 cu in (4.6 L), and with the optional Rochester mechanical fuel injection, it became one of the first production engines ever to make one horsepower per cubic inch. This engine was used to power the Corvette, and the Bel Air at that time. It would later be extended to other vehicles as well, and replace the old style 265 V8s. The displacement changed over the years, eventually reaching 400 cu in (6.6 L), but none caught on like the 350 cu in (5.7 L) small-block. This engine is still in production today at General Motors Toluca, Mexico plant (primarily for the GM over-the-counter Goodwrench powerplants), but is no longer offered in current model year vehicles since the year 2004. Its production numbers were impressive, with more than 90,000,000 built. It has been produced in carbureted, mechanical fuel injection, and electronic fuel injection forms.
From 1955-74, the small-block engine was known as the "Turbo-Fire V8".
Although Buick, Cadillac, Oldsmobile, and Pontiac also designed V8 engines (see list of GM engines), it was Chevrolet's 350 cu in (5.7 L) small-block that became the GM corporate standard. Over the years, every American General Motors division except Saturn used the Chevrolet small-block, and its descendants (see GM LT engine and GM LS engine) continue as the company's mainstream V8 design today.
The small-block was on the Ward's 10 Best Engines of the 20th Century list.
Chevrolet tested the small-block twice with no water and no oil at wide-open throttle. The first time it lasted an hour and 15 minutes and the second time it lasted two hours.
Major Versions
Generation 1
The original design of the small block remained remarkably unchanged for its production run, which began in 1955 and ended, in passenger vehicles, in 2003. The engine is still being built today for many aftermarket applications, both to replace worn-out older engines and also by many builders as high-performance applications. There were, however many minor changes made to the engine over the years; these changes are listed below.
* 1955 - The first year of introduction in 265 cu in (4.3 L) only. As was fairly common for the time, no provision for an oil filter was included in the engine design.
* 1956 - Oil filtration was introduced, using a sock style filter in a canister.
* 1957 - The engine came with only front mounts, the side mount bosses were present but not drilled and tapped leaving its retrofitting problematic.
* 1962 - The block's cylinder wall casting was revised to allow four inch bores. Previously, only certain years of the 283 engine (1958-1962) could be bored safely to four inches.
* 1968 - The main journal diameter was increased to 2.45 in from 2.30 in and the connecting rod journal diameter was increased to 2.10 in from 2.00 in. This allowed the use of cast iron crankshafts as the previous parts were made of forged steel. The rod bolts were changed from 11/32 in. diameter to 3/8 inch. Additionally, the canister/sock style oil filter was now converted to use spin on filters. The oil fill location was moved from a tube on the front of the intake manifold to a cap on either side valve cover.
* 1987 - The valve cover surfaces were changed such that cylinder head mounting lip was raised and the bolt location was moved from 4 bolts on the perimeter, to 4 bolts down the centerline of the valve cover (this design debuted on the Corvette in 1985, and Chevrolet 4.3 L the year before). The rear main seal was changed from a 2-piece rubber design to a 1-piece rubber design that used a mounting appliance to hold it in place. This necessitated a change in the flywheel/flexplate bolt pattern as well. Also changed were the mounting angles of the center 2 bolts on each side of the intake manifold (from 90 degrees to 73 degrees) and the lifter bosses were increased in height to accept roller lifters. The alloy heads for use in the Corvette still retain the non-angled bolts (center 2 bolts attaching to the intake). Also all carburetors were done away with and replaced by TBI (throttle-body injection) fuel injection that acts some what like a carburetor.
* 1996 - This was the last change for the Generation I engine, and continued through the end of the production run in 2003; all 1997-2003 Generation I engines were Vortec truck engines. The cylinder heads were redesigned using improved ports and combustion chambers similar to those in the Generation II LT1. This change resulted in significant power increases.
SB2 and SB2.2
(Small Block/second generation) This engine was produced from 1996 to the present for racing applications only. The cylinder heads were redesigned and the lifter bores were offset. The valve sequence for each head was changed from the traditional E-I-I-E-E-I-I-E to a new I-E-I-E-E-I-E-I and because of this the camshaft was redesigned.
Generation II
LT1 from a 1993 Chevrolet Camaro Z28
See the GM LT engine page for more information on the Generation II small-block V8s, which differ mainly in their reverse-flow cooling system.
Generation III / IV
LS1 from a 1998 Chevrolet Camaro Z28
See the GM LS engine page for more information on the current family of General Motors small-block V8s.
Early Small Blocks
The first small block Chevrolet V-8 was a 265 cu in (4.3 L) engine that was developed in 1955 for the Corvette. Displacement and power eventually reached 327 cu in (5.4 L) and 375 hp (280 kW) (in prototypes) before the Corvette switched to Chevrolet big-block power. Although less powerful than big blocks, small block engines have remained popular due to their lower cost (including the cost of performance add-ons) and solid performance and reliability.
265
The 265 cu in (4.3 L) V8 was the first Chevrolet small block. Designed by Ed Cole's group at Chevrolet, it filled the power gap in the 1955 Corvette lineup, producing an impressive 250 hp (186 kW). The little engine went from drawings to production in just 15 weeks. Besides its compact dimensions, the small-block was known for its novel green-sand foundry construction process.
Dimensions were oversquare - 3.75 in (95 mm) bore and 3 in (76 mm) stroke. The small-block's 4.4 in (111.8 mm) bore spacing would continue in use for decades. It was a pushrod cast-iron engine with hydraulic lifters and a 2-barrel or 4-barrel Rochester carburetor. The 1955 conventional passenger car version produced 162 hp (121 kW) with a 2-barrel carburetor, or could be upgraded at extra cost to a "Power Pack" version conservatively rated at 180 hp (134 kW) with a four-barrel Rochester and dual exhaust. The first production year of this engine had no provision for oil filtration built into the block; however, an add-on filter mounted on the thermostat housing was installed during production. Due to the lack of adequate oil filtration provisions, the '55 model year block is typically only desirable to period collectors.
The 1956 Corvette introduced three versions of this engine - 210 hp (157 kW), 225 hp (168 kW) with twin 4-barrel carbs, and 240 hp (179 kW) with a high-lift cam.
* 1955, 1956 Chevrolet Corvette
* 1955 Chevrolet, 165 hp (123 kW) (2-barrel) and 195 hp (145 kW) (4-barrel)
283
The 283 cu in (4.6 L) V8 was introduced in 1957. It was a version of the 265 cu in (4.3 L) with a larger bore at 3.87 in (98 mm). There were five different versions ranging from 185 hp (138 kW) to 283 hp (211 kW) depending on whether a single carb, twin carbs, or fuel injection was used. Power was up a bit each year for 1958, 1959, and 1960.
The 1957 engine featured Ramjet mechanical fuel injection, allowing the engine to produce 1 hp (1 kW) per cubic inch, an impressive feat at the time. For 1961, an amazing 315 hp (235 kW) was available from this unit.
* 1957-1962 Chevrolet Corvette
302
Chevrolet produced a special 302 cu in (4.9 L) engine for Trans Am racing from 1967-1969. It was the product of placing the 3-inch stroke crankshaft from a 283 into a 4-inch bore 327 block. This engine was mostly used in the first-generation Camaro Z28. Just over 100 DZ block 302 engines were used in the, unique to South Africa, Chevrolet Firenza Can Am. Conservatively rated at 290 hp (216 kW), actual output was around 360 hp (268 kW). This block is one of 3 displacements that underwent a transformation for the 1968/1969 period when the main bearing size was increased from 2.30 in to 2.45 in.
307
A 307 cu in (5 L) version was produced from 1968 through 1973. Engine bore was 3.875 inches (98.4 mm) with a 3.25-inch (82.6 mm) stroke.
The 307 replaced the 283 in Chevrolet cars and produced 200 hp (149 kW) SAE gross at 4600 rpm and 300 lb·ft (407 N·m) of torque at 2400 rpm in the 1960s. The later emissions-modified versions produced just 115 hp (86 kW) SAE net, giving the engine one of the lowest power-per-displacement ratings of all time. Chevrolet never produced a high-performance version of this engine, though they did produce, for Outboard Marine Corporation, a high-performance marinized 307, rated at 235 hp (175 kW) and 245 hp (183 kW) SAE gross, depending on year, that shipped with the Corvette/Z-28's cast aluminum valve covers and Rochester QuadraJet carb. Chevy also built other versions of the OMC 307 rated at 210 hp (157 kW), 215 hp (160 kW) and 225 hp (168 kW) SAE gross.
One of the biggest myths about the 307 is that all the blocks were cast with a very low nickel content. However, some 307 blocks, such as casting number 3970020 with suffix VxxxxTHA (x's in place for date), had 010 and 020 stamped under the timing chain cover indicating high tin and nickel content.
327
The 327 cu in (5.4 L) V8, introduced in 1962, had a bore and stroke of 4 in (102 mm) by 3.25 in. Power ranged from 250 hp (186 kW) to 375 hp (280 kW) depending on the choice of carburetor or fuel injection, camshaft, cylinder heads, pistons and intake manifold. In 1962, the Duntov solid lifter cam versions produced 340 hp (254 kW), 344 lb·ft (466 N·m) with single Carter 4-brl, and 360 hp (268 kW), 352 lb·ft (477 N·m) with Rochester mechanical fuel injection. In 1964, horsepower increased to 365 hp (272 kW) for the now dubbed L79 version, and 375 hp (280 kW) for the fuel injected L84 respectively, making the L84 the most powerful naturally aspirated, single-cam, production small block V8 until the appearance of the 385 hp (287 kW), 385 lb·ft (522 N·m) Generation III LS6 in 2001. * L79, L84 1963-1965; Chevrolet Corvette. This block is one of three displacements that under went a major change in 1968/1969 when the main bearing size was increased from 2.30 to 2.4 inches (58.4–61.0 mm). In 1965 the SS malibu choice of the 327/350 hp know as the "L79", with a aluminum manifold, holley squarebore carb, chrome valve covers, a huge 8" balancer, huge 2.02" intake valves and could only be ordered with a 4 speed trans.
400
A 400 cu in (6.6 L) small-block was introduced in 1970 and produced for 10 years. It had a 4.125-inch (104.8 mm) bore and a 3.75-inch (95.3 mm) stroke. Initial output was 265 hp (198 kW) and was only available equipped with a 2-barrel carburetor. In 1974 a 4-barrel version of the 400 was introduced,while the 2-barrel version stopped production in 1975. 1976 was the last year that the 400 was used in a Chevrolet Passenger car, available in both the A-Body and B-Body line. While popular with circle-track racers, the engine was prone to cooling troubles if cylinder heads without steam holes were used. they mostly put out 250 hp stock.
Later Small Blocks
This section documents the odd-size small blocks developed after the 350 appeared in 1969. Many of these basic blocks are variations of the 350 design.
262
The 262 was a 262 cu in (4.3 L) 90° pushrod V8 with an iron block and heads. Bore and stroke were 3.67 in (93 mm) by 3.10 in (78.7 mm). Power output for 1975 was 110 hp (82 kW) and 195 lb·ft (264 N·m). The 262 was underpowered and was replaced by the 305 the following year.
This was Chevrolet's second 4.3 L-displacement powerplant; two other Chevrolet engines displaced 4.3 L: the Vortec 4300 (based on the Chevrolet 350, with two cylinders removed), and a derivative of the LT1 known as the L99 (using the 305's 3.736-inch bore, 5.94-inch connecting rods, and a 3-inch crankshaft stroke).
This engine was used in the following cars:
* 1975-1976 Chevrolet Monza
* 1975 Chevrolet Nova
267
The 267 was introduced in 1979 for GM F-Body(Camaro), G-bodies (Chevrolet Monte Carlo, El Camino, and Malibu Classic) and also used on GM B-body cars (Impala and Caprice models). The 267 cu in (4.4 L) had the 350's crankshaft stroke of 3.48" and the smallest bore of any small-block, 3.500 in. The 3.500" bore was also used on the 200 cu in (3.3 L) V6, which was introduced a year earlier. (The 200 was a Chevrolet V6 engine based on the small block with the #3 and #6 cylinders removed).
It was available with a Rochester Dualjet 210 - effectively a Rochester Quadrajet with no rear barrels. After 1980, electronic feedback carburetion was used on the 267.
While similar in displacement to the other 4.3-4.4 L V8 engines produced by General Motors (including the Oldsmobile 260 and Pontiac 265, the small bore 267 shared no parts with the other engines and was phased out after the 1982 model year due to inability to conform to emission standards. Chevrolet vehicles eventually used the 305 cu in (5 L) as its base V8 engine.
305
The 305 variant of the small-block Chevrolet had a displacement of 305 cu in (5 L) with a 3.736-inch (95 mm) bore and 3.48-inch (88.4 mm) stroke. The 262 was considered underpowered for use in vehicles with a wheelbase greater than 110 inches, so GM engineers decided to increase the bore diameter from 3.671 to 3.736 inches (93.2–94.9 mm) and increase the stroke from 3.10 to 3.48 inches (78.7–88.4 mm) (from the 350). Some performance enthusiasts have noted a marked resistance to performance upgrades on the 305 because of its small bore, poor selection of aftermarket cylinder heads, and the relatively high availability of 350 cu in (5.7 L) engines.
Induction systems for the 305 included carburetors (both 2 and 4-barrel), throttle-body injection (TBI), tuned-port fuel injection (TPI), and sequential fuel injection (GM Vortec).
After 1996, its usage was limited to light trucks and SUVs as the Vortec 5000.
Year hp (kW) lb·ft (N·m)
1976 140 250 w/2bbl.
1977 145 245 w/2bbl.
1978 140 240 w/2bbl.
1978 160 235 w/4bbl.
1979 130 245 w/2bbl.
1979† 125 235 w/2bbl.
1980 155 240 w/4bbl.
1981 150 240 w/4bbl
† California Emissions
The 305 was used in the following cars:
* 1977-1993 Chevrolet Caprice (includes Impala)
* 1977-1986 Pontiac Parisienne
* 1976-1979 Chevrolet Monza
* 1976-1979 Chevrolet Nova (also GM X-body clones after 1976)
* 1976-1992 Chevrolet Camaro
* 1976-1988 Chevrolet Malibu, Chevrolet El Camino, and Chevrolet Monte Carlo
* 1978-1992 Pontiac Firebird
* 1978-1980 Oldsmobile Cutlass (US Market only, Canadian market 1978-1987)
* 1991-1992 Oldsmobile Custom Cruiser
* 1981-1987 Pontiac Grand Prix
* 1975-1979 Buick Skylark
* 1977-2003 Chevrolet/GMC Trucks, SUVs, Vans
* 1991-1992 Cadillac Brougham
LG3
Years:1976-1980
Dualjet 2 bbl carb version with 8.5:1 compression.
LG4
Years: 1980-1987
The LG4 was the "low output" 305 cu in (5 L) (compared to the L69). It produced 150 hp (112 kW)-170 hp (127 kW) and 240 lb·ft (325 N·m)-250 lb·ft (339 N·m). The addition of a knock sensor for the engine management system in 1985 allowed an increase in compression and a more aggressive spark timing map in the ECM. As a result power increased for the 1985 models to 165 hp (123 kW) from the 150 hp (112 kW) rating in 1984.
L69
Years: 1983-1986
The L69 was the last true H.O. engine. The High Output 5 L (305 cu in) , featuring higher compression of 9.5:1 with heads of the to-be-discontinued LU5 Cross-Fire fuel injection engine, and utilizing camshaft and 4" catalytic converter of the 5.7 L (350 cu in) L83 which was used on the Corvette of 1982 and 1984. Complete with a 2.75 inch exhaust system, topped by a recalibrated 4-barrel carburetor, dual snorkel air cleaner assembly, aluminum intake manifold, aluminum flywheel, electric cooling fan, and furthermore a knock sensor including more aggressive spark timing, this engine produced 190 hp (142 kW) @ 4800 and 240 lb·ft (325 N·m) of torque @ 3200 rpm. In most cases, being mated to a 3.73 or 3:42 ratio limited slip rear axle and a T5 5-speed or 700R4 automatic, this engine provided its driver with a wide range of rpm to play in.
LE9
Years: 1981-1986
The LE9 5 L (305 cu in) was the truck/van version of the High Output 305. It also had flattop pistons for a 9.5:1 compression ratio, the "929" truck 350 camshaft for more torque, 14022601 casting heads featuring 1.84/1.50" valves and 53 cc chambers, a specially calibrated 4bbl Q-Jet, the hybrid centrifugal/vacuum advance distributor with ESC knock sensor setup, and lower restriction exhaust. The engine made 210 hp (157 kW) @ 4,600 and 250 lb·ft (339 N·m) @ 2,000 rpm.
L03
Years: 1987-95
The L03 was the "low output" 5 L (305 cu in) (compared to the 305 TPI LB9). It produced 170 hp (127 kW) and 255 lb·ft (346 N·m) of torque (190 hp (142 kW) at 4,400 rpm and 275 lb·ft (373 N·m) at 2,400 in 1993-1995 GM trucks). This engine used throttle-body fuel injection. The TBI uses a unique injector firing scheme, for every rotation of the engine, each injector fired twice.
LB9
Years: 1985-1992
Introduced in 1985, the LB9 was the first Chevrolet small block to have tuned-port fuel injection (TPI). It was introduced with 215 hp (160 kW) and 275 lb·ft (373 N·m) and varied between 190 hp (142 kW)-230 hp (172 kW) (with 275 lb·ft (373 N·m)-300 lb·ft (407 N·m) of torque) over the years offered. It was an option on all 1985-1992 Chevrolet Camaro & Pontiac Firebird models.
350
Not to be confused with Buick V8 engine, Oldsmobile V8 engine, or Pontiac V8 engine.
The first generation of Chevrolet small-blocks began with the 1955 Chevrolet 265 cu in (4.3 L) V8. But it was the 350 cu in (5.7 L) series that came to be emblematic of the Chevrolet small block V8 engine. The engine's physical dimensions (oversquare 4.00-inch bore and 3.48-inch stroke, 102 mm by 88 mm) are nearly identical to the 400 hp (298 kW) LS2 engine of today, but much has changed. It is by far the most widely used Chevrolet small-block; it has been installed in everything from station wagons to sports cars, in commercial vehicles, and even in boats and (in highly modified form) airplanes.
First usage of the 350 was in the 1967 Chevrolet Camaro and 1968 Nova producing 295 horsepower (gross); other Chevrolet vehicle lines followed suit in the year 1969.
The GM Goodwrench 350 crate engine comes in several variations. The lowest priced uses the pre-1986 four-bolt casting molds with two dipstick locations; pre-1980 on the driver's side and post-1980 on the passenger's side. This engine was produced in Mexico since 1981 as the Targetmaster 350, and now the GM Goodwrench 350.
ZQ3
Years: 1969, 1970, 1972-1975
The ZQ3 was the standard engine in the 1969-1970 Chevrolet Corvette. It was a 300 hp (224 kW) version of the 350 cu in (5.7 L) small-block, with 10.25:1 compression and hydraulic lifters. It used a Rochester "4MV" Quadra-Jet 4-barrel carburetor. This was the first block produced that featured the larger 2.45 inch main bearing versus the older 2.30 inch main bearing in 1968/1969.
The 1969 ZQ3 produced 200 hp (149 kW) and 300 lb·ft (407 N·m) with 8.5:1 compression, dropping another 10 hp (7 kW) in 1973. 1975 saw the ZQ3 at 165 hp (123 kW) and 255 lb·ft (346 N·m).
L46
Years: 1969, 1970
The L46 was an optional engine on the 1969-1970 Chevrolet Corvette. It was a 350 hp (261 kW), 380 lb·ft (515 N·m) version of the ZQ3 with higher 11:1 compression.
LT-1
LT-1 from a 1970 Chevrolet Camaro Z28
Years: 1970-1972
The LT-1 was the ultimate 350 cu in (5.7 L) V8, becoming available in 1970. It used solid lifters, 11:1 compression, a high-performance camshaft, and a Holley four-barrel carburetor on a special aluminum intake to produce 370 hp (276 kW) and 380 lb·ft (515 N·m). It was available on the Corvette and Camaro Z28. Power was down in 1971 to 330 hp (246 kW) and 360 lb·ft (488 N·m) with 9:1 compression, and again in 1972 (the last year of the LT-1) to 255 hp (190 kW) and 280 lb·ft (380 N·m).
There was also a later small-block engine called the "LT1".
L48
Years: 1967-1980
The L-48 is the original 350 cu in (5.7 L), available only in the Camaro or Chevy II/Nova in '67 & '68. In '69 it was used in almost everything; Camaros, Corvettes, Impalas, Chevelles & Novas. From '75-'80 it was available only in the Corvette. L-48's use a Hyd Cam, 4bbl Qjet, Cast pistons, 2 bolt main caps, "Pink" Rods, #0014 Blocks & #993 heads. Power output ranges from 300HP(gross) down to 175HP(net).
The L48 was the standard engine in the 1971 Chevrolet Corvette. It produced 270 hp (201 kW) and 360 lb·ft (488 N·m) with an 8.5:1 compression ratio.
The 1976-1979 L48 was the standard Corvette engine and produced 180 hp (134 kW) and 270 lb·ft (366 N·m). The 1980 L48 stood at 190 hp (142 kW) and 280 lb·ft (380 N·m) from 8.2:1 compression.
In 1972 the only way to get a L48 (4bbl V8) in a Chevy Nova was to get the Super Sport Package. This is indicated by the 5th digit in the VIN being a "K". 1972 was the only year you could verify the Super Sport package by the VIN.
In 1973 the "L-48" had cold air induction (throttle activated) and developed 190 hp (142 kW) (net). Beginning in 1974 the hp was reduced for several years until it reached a low of 165 hp (123 kW) (net) in 1975, before rising again.
L82
Years: 1973-1980
The 1973-1974 L82 was a "performance" version of the 350 producing 250 hp (186 kW) and 285 lb·ft (386 N·m) from 9:1 compression. It was down to 205 hp (153 kW) and 255 lb·ft (346 N·m) for 1975. It was the optional engine again in 1976-1977, producing 5 hp (4 kW) more. The 1978 L82 recovered somewhat, producing 220 hp (164 kW) and 260 lb·ft (353 N·m), and then 5 hp (4 kW) and 10 lb·ft (14 N·m) more for 1979. 1980 saw yet another 10 hp (7 kW) and 15 lb·ft (20 N·m).
L81
Years: 1981
The L81 was the only 5.7 L (350 cu in) Corvette engine for 1981. It produced 190 hp (142 kW) and 280 lb·ft (380 N·m) from 8.2:1 compression, exactly the same as the 1980 L48, but added computer control spark advance, replacing the vacuum advance.
L83
Years: 1982, 1984
The 1982 L83 was again the only Corvette engine (and only available with an automatic transmission) producing 200 hp (149 kW) and 285 lb·ft (386 N·m) from 9:1 compression. This was again the only engine on the new 1984 Vette, at 205 hp (153 kW) and 290 lb·ft (393 N·m). The L83 added Cross-Fire fuel injection (twin throttle-body fuel injection).
L98
For the new Generation IV V8, see GM L98.
Years: 1985-1992
The new 1985 L98 added tuned-port fuel injection "TPI", which produced 230 hp (172 kW) and 330 lb·ft (447 N·m). It was standard on all 1985-1991 Corvettes (rated at 230 hp (172 kW)-250 hp (186 kW) and 330 lb·ft (447 N·m)-350 lb·ft (475 N·m)). Optional on 87-92 Chevrolet Camaro & Pontiac Firebird models (rated at 225 hp (168 kW)-245 hp (183 kW) and 330 lb·ft (447 N·m)-345 lb·ft (468 N·m)) 1987 versions had 10 hp (7 kW) and 15 lb·ft (20 N·m) more thanks to 9.5:1 compression. Compression was up again in 1991 to 10:1 but output stayed the same.
LM1
The LM1 is the base 5.7 L (350 cu in) with a 4-barrel carburetor (usually with a Rochester Quadrajet) in passenger cars until 1988. Throughout its lifespan, it received either a points, electronic, and/or computer-controlled spark system, to conventional and feedback carburetors.
LM1s were superseded with the LO5 powerplant after 1988.
L05
The L05 was introduced in 1987 for use in Chevrolet/GMC trucks in both the GMT400 (introduced in April 1987 as 1988 models) and the R/V series trucks such as the K5 Blazer, Suburban, and rounded-era pickups formerly classed as the C/K until 1996 which includes chassis cabs and 4-door crew cabs. Although usage was for trucks, vans, and 9C1-optioned Caprices, the L05 was also used with the following vehicles:
* 1992/1993 Buick Roadmaster sedan and station wagon
* 1991/1992 Cadillac Brougham (optional engine)
* 1993 Cadillac Fleetwood
* 1992/1993 Chevrolet Caprice Wagon (optional engine)
* 1993 Chevrolet Caprice LTZ
* 1992 Oldsmobile Custom Cruiser Wagon (optional engine)
L05 usage was replaced by the GM LT1 after 1993 in GM B-Bodies until production ceased in 1996.
In mid 1996 the L05 was equipped with Vortec heads used in the 1996 G30.
L31
The L31 replaced the LO5 in 1996 - known as the Vortec 5700. Known as the GEN 1+, this was the final incarnation of the 1955-vintage small block, ending production in 2005 with the last vehicle being a Kodiak/Topkick HD truck. Volvo Penta and Mercury Marine still produces the L31. The "MARINE" intake is a potential upgrade for L31 trucks.
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Subject: Re: Does it feel like the mid 10s yet?
Written By: KatanaChick on 05/29/14 at 8:29 am
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Now THAT is a nice interior!