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Volvo Penta and Mercury Marine also still produce the L31. You are currently viewing Chevrolet.com (United States). At its core was the stout L69 shortblock and it used the same aggressive L69 camshaft profile. Complete with dry sump system, carburetor, headers. Every car was tested on a chassis dyno and then performed a 6-mile (10km) road test. The LB9 "Tuned Port Injection 5.0L" was introduced in 1985. The 1987 versions had 20hp (15kW) and 15lbft (20Nm) more and a change to hydraulic roller camshaft. All Chevrolet V8s, from the big-blocks to today's LS7 and LS9, evolved from the 265/283cuin (4.3/4.6L) small-block family. It quickly gained popularity among stock car racers, nicknamed the "Mighty Mouse", for the then-popular cartoon character, later abbreviated to "Mouse". 436 HP Base Stroker Long Block Crate Engines BP38318CT1, BluePrint Engines GM 383 C.I.D. The Vortec 5700 produces 255hp (190kW) to 350hp (261kW) at 4,600 RPM and 330lbft (447Nm) to 350lbft (475Nm) of torque at 2,800 RpM. *Over 73 this model sold*, CHEVY 383 410 HP 420 FT LB STROKER ENGINE, 2 product ratings - CHEVY 350 355 CHEVROLET SMALL BLOCK SBC STREET STRIP RACE HOT RAT ROD RACECAR, 1 product ratings - CHEVROLET 350 / 325 HP HIGH PERFORMANCE TURN-KEY CRATE ENGINE TRUCK CAR. This block is one of three displacements that underwent a major change in 1968 when the main journal size was increased from 2.3 to 2.45in (58.4 to 62.2mm). For more detailed information about selecting a crate motor for your project, check out this article [https://www.onallcylinders.com/2016/01/26/video-how-to-choose-the-right-crate-engine/] on our official blog, which includes a helpful video. ("Dark" humor), https://en.wikipedia.org/w/index.php?title=Chevrolet_small-block_engine_(first_and_second_generation)&oldid=1100778760, Short description is different from Wikidata, Articles with unsourced statements from October 2016, Articles with unsourced statements from April 2020, Articles with unsourced statements from November 2016, All articles with vague or ambiguous time, Articles needing additional references from May 2019, All articles needing additional references, Articles needing additional references from November 2018, Articles to be expanded from December 2017, Articles needing additional references from September 2008, Articles with unsourced statements from September 2008, Articles needing additional references from July 2022, Articles that may contain original research from July 2022, All articles that may contain original research, Creative Commons Attribution-ShareAlike License 3.0, 8.2:1, 8.3:1, 8.4:1, 8.5:1, 8.6:1, 9.0:1, 9.1:1, 9.5:1, 10.25:1, 10.9:1, 11.0:1, 14.25:1, only Camaro Z/28, 1968 Cross-Ram intake-manifold with 2 Carter 4bbl, TBI; 9C1 optioned Caprice and F-bodies had hydraulic roller cam, Truck/Van only - electronic spark control module used, 4bbl Rochester Quadrajet (4MV, M4MC, E4ME); retail option until 1981 when last used with the Camaro Z28; post-1980 use of the LM1 was for 9C1-optioned B (Caprice, Impala) and G-bodies (Malibu), 4bbl Rochester Quadrajet; flat top pistons with a D-shaped relief cut for valve clearance, 4bbl Rochester Quadrajet (E4ME), Corvette, Nova and Monza only; 2bbl Rochester 2GC carburetor, reverse cooling, Caprice, special ops, police vehicles, H.O., Firebird/Camaro, Monte Carlo SS only, 1996 G-Series vans over 8,500lb (3,856kg) GVW w/ 4L80E transmission, 19772003 Chevrolet/GMC Trucks, SUVs, Vans, 19781981 Pontiac Grand LeMans (A/G-body, includes Grand Am), This page was last edited on 27 July 2022, at 16:57. The system used a special version of GM's still-new "CCC" engine management system. [citation needed]. Since 1968, Summit Racing has been helping back yard tinkerers and professional builders find the right parts for their build. It offers the airflow of more expensive heads, at a much lower cost. The first generation of Chevrolet small-blocks began with the 1955 Chevrolet 265cuin (4.3L) V8 offered in the Corvette and Bel Air. In 1968, the engine had the chrome covers, but without the Chevrolet name, connected to a PCV valve and a chrome 14in 3in (355.6mm 76.2mm) drop-base open-element air cleaner assembly fitted with a crankcase breather on a 780cuft/min (22m3/min) vacuum secondary Holley 4-Bbl carburetor. The engine was originally planned for the long-awaited '82 Camaro Z28, however due to a last-minute GM-mandated cancellation of Pontiac's 301 V8 production & Turbo 4.9L Project (T301), the Crossfire 305 was made available in the '82 Trans Am. (Source: 1984 Chevrolet Truck Data Book.). This street beast starts with a Dart SHP block that we fully cnc machine and fill with the following components. Cruiser, Drop-In, 341 HP, 371 TQ, New Block, Aluminum Heads, Chevrolet, Small Block, Each, Estimated Ship Date: The medium journal 305, like its big-brother 350, would be further developed in the 1990s, although with a reduced 3in (76.2mm) stroke using 5.94in (150.9mm) connecting rods, into the Generation II LT engine L99 263. Small block 440 CU Inch all aluminum dry sump, 983HP with alcohol injection. The LT-1 was available in the Corvette, and Camaro Z28. It used an EFI system with electronically controlled injectors, which were mated to a twin barrel "carburetor" body. L05 usage was replaced by the LT1 after 1993 in GM B-Bodies and D-Bodies until production ceased in 1996. A second generation of the LT5 was in the testing phase as early as 1993. The last of this family was the 307cuin (5.0L), which was a stroked 283 with a medium journal. The Generation II engine is largely an improved version of the Generation I, having many interchangeable parts and dimensions. Unfortunately, the system was placed atop the basic LG4 and lacked any significant performance capability. 390 HP Dressed Long Block Crate Engines BP35513CT1, BluePrint Engines GM 383 C.I.D. Also added was a knock sensor to allow the "CCC" engine management system to compensate for the increase in compression and a more aggressive spark-timing map in the ECM. Corvette blocks had four-bolt main caps, while most other blocks were two-bolt main caps. After they were built at the Mercruiser plant in Stillwater, Oklahoma they were shipped to Bowling Green, Kentucky and stored in the Corvette assembly plant until the 1994 and 1995 ZR-1s went down the assembly line. Engines prepared for competition use were capable of producing 465hp (347kW) with little more than the 8-Bbl induction, ported heads with higher pressure valvesprings, roller rocker arms, and the '754 2nd-design road-race cam. Throughout its lifespan, it used mechanical ignition points, electronic, or computer-controlled spark system, and conventional or feedback carburetors. See Oldsmobile Diesel engine for more information. The L99's smaller displacement provided slightly better EPA fuel economy than the 5.7L LT1, but at significantly reduced horsepower and torque levels. Making its debut in the 1992 Chevrolet Corvette, the new LT1 sought to draw upon the heritage of the 1970 Chevrolet LT-1. The 1957 Rochester Ramjet mechanical fuel injection version produced an even onehp per onecuin (283hp (211kW), an impressive feat at the time. GMH used the same specification engine in the Holden HK Monaro GTS327. Chevrolet's L31 was replaced by GM's 5.3L LM7 V8. The 265cuin (4.3L) "Turbo-Fire" V8 was the second Chevrolet small-block; the first Chevrolet V8 was produced in 1917. "[26] The LT9 was used in models with GVWRs (gross vehicle weight ratings) over 8,500lb (3,900kg). While similar in displacement to the other 4.34.4L (265267cuin) 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. The connecting rod was also 400 specific being 5.565in (141.4mm) as opposed to the 5.7in (144.8mm) rod used in all other small block Chevrolet engines. For 1985, the 4-valve-relief, flat top pistons from the L69 were added to the LG4, which resulted in another increase in compression. The LE9 5.0L (305cuin) was a truck/van/car version 4BBL 650cuft/min (18m3/min) that also had a 9.5:1 compression ratio, the LM1 cam and 14010201 casting heads featuring 1.84/1.50" valves and 53cc (3.2cuin) chambers. In 1969 and 1970 it was a 300hp (224kW) version of the 350cuin (5.7L) small-block, with 10.25:1 compression and hydraulic lifters. And each cylinder had its own fuel injector fed by a fuel rail mounted above each bank. Compression was up again in 1990 to 9.5:1 Camaro/Firebird and 10:1 Corvettes, but rated output stayed the same. In a very short time, these engines obtained the notorious nickname; "Ceasefire Engine". Chevrolet vehicles eventually used the 305cuin (5.0L) as their base V8 engine. Cruiser Base Crate Engines BP350CTC, ATK High Performance Chevy LM7 5.3L 385 HP Long BLock Crate Engines HP97, VEGE Remanufactured Long Block Crate Engines VCT84WD, Ford Performance Parts 7.3L V8 Super Duty Crate Engines M-6007-73, Chevrolet Performance LS3 495 HP Long Block Crate Engines 19432416, Chevrolet Performance ZZ502 C.I.D. Krause Publications, 2004, Gunnell, John, 360hp (268kW) with the Camaro's 'log' manifold exhaust system and points ignition. Low laps. Power output was 300hp (224kW) SAE and 380lbft (515Nm) torque. Future availability is unknown. V8 - a Genuine 1980s Legend", "information on the Chevrolet C1500 w/ L30 engine", "1980 Chevrolet Camaro Sport Coup 4.4 L V-8 automatic", "LT1 6.2L Engine Specs: Performance, Bore & Stroke, Cylinder Heads, Cam Specs & More", "Rebirth of the Gen V LT1 Small-BlockPart Two! The LT-9 is often known by VIN code as the "M-code 350. Subscribe to receive monthly email communications such as news, offers, and more from Chevrolet Performance. Bore and stroke were 3.736in 3.48in (94.9mm 88.4mm), using the 350's crankshaft throw. While the 302 became a strong Limited Sportsman oval track racing engine in the hands of racers like Bud Lunsford in his 1966 Chevy II, its bore/stroke and rod/stroke geometries made it a natural high-rpm road-racing engine and were responsible for its being among the more reliable production street engines homologated for full competition across all the American makes, winning back-to-back Trans-Am Championships at the hands of Mark Donohue in 1968 and 1969. 48,619 miles. The engine saw a series of gradual improvements, increasing reliability, mpg, and power output through its production run. The 400 was never intended as a high-performance engine and never saw large factory horsepower numbers; nevertheless, it developed a reputation for creating tremendous torque (up to 400lbft (542Nm) in 1970) and has since become popular for many types of racing, both on- and off-road. Shop from brands including Chevrolet Performance, Ford Performance, Mopar Performance, BluePrint Engines, VEGE Remanufactured Engines, First Mate, ATK, and more. Visitwww.chevroletperformance.com/emissionsfor more details. [23], In 1971, power decreased to 270hp (201kW) (gross) and 300lbft (407Nm) (gross) of torque with a lower 8.5:1 compression. Sep 7, 2022, Crate Engine, Godzilla, 7.3L, 10.5:1 Compression, 430 HP, 475 lb/ft. This was Chevrolet's second 4.3 L-displacement power plant; four other Chevrolet engines displaced 4.3 L: the Vortec 4300 (a V6 based on the Chevrolet 350cuin (5.7L), with two cylinders removed), the original 265cuin (4.3L) V8 in 1954, a bored version of the stovebolt-era 235 inline six displacing 261cuin (4.3L), and a derivative of the Generation II LT engines known as the L99 (using the 305's 3.736in (94.9mm) bore, 5.94in (150.9mm)-long connecting rods, and a 3in (76.2mm) stroke). [41] The pistons used in the 4.3 L V8 were the same as the Vortec 5000's, but longer 5.94in (150.9mm) connecting rods were used to compensate for the shorter stroke. [23] The L81 was the first Corvette engine to employ a "smart carburetor." The 267 when introduced in the GM F-Body as the L39 4.4 L it made 120hp (89kW) at 3600RPM and 215lbft (292Nm) of torque at 2000RPM (SAE NET). The L48 is the original 350cuin (5.7L), solely available for 1967 in the Super Sport (SS) version of Camaro (1967-up) or Chevy II/Nova in 19681979. [23] The L98 V8 was optional on Jan. '87'92 Chevrolet Camaro & Pontiac Firebird models (rated at 225hp (168kW)-245hp (183kW) and 330lbft (447Nm)-345lbft (468Nm)) The Vortec 5000 L30 is a V8 truck engine. A 307cuin (5.0L) version was produced from 1968 through 1973. The swirl ports (known to GM as a vortex chamber) along with the irregular shape of the combustion chambers limit the airflow and horsepower output where they did not provide a fast burn, later phased in with the 1996 Vortec heads. The LT1 used a reverse-flow cooling system which cooled the cylinder heads first, maintaining lower combustion chamber temperatures and allowing the engine to run at a higher compression than its immediate predecessors. Also Sell on A version of it that was built by GM Canada was also available in Studebaker vehicles produced in Canada for 1965 and 1966. The 1978 L82 recovered somewhat, producing 220hp (164kW) and 260lbft (353Nm) in the Corvette and in 1979 it produced 225hp (168kW) in the Corvette. Aug 25, 2022 151 hydraulic cam. This was one of the least talked about yet most transformative and comprehensive performance and durability upgrades of its time. The stud-mounted independent ball rocker arm design patented by Pontiac engineer Clayton Leach, was scheduled for introduction in the Pontiac 1955 V8. ", "Orbital Appoints Terry Stinson as Chief Executive Officer and Managing Director", "Chevrolet Corvette ZR-1, 1993 MY 1YZ07 US", "Corvette LS6 - Ruthless Pursuit of Power", "The Difference Between the LT1 & the L99", Video: First start up SBC engine (& zoomies flames), Video: Let's see Chevy first start up, and what NOT to do! The small-block family line was honored as one of the 10 Best Engines of the 20th Century by automotive magazine Ward's AutoWorld. The L81 was the only 5.7L (350cuin) Corvette engine for 1981. ( 14 ), Crate Engine, Dressed Long Block, Chevy, Small Block, 350 Crate Motor, BluePrint Cylinder Heads, Roller Cam, 4.5 out of 5 stars The LM1 is the base 350cuin with a 4-barrel carburetor (usually with a Rochester Quadrajet) 155175hp (116130kW) engine in passenger cars to 1979 as a retail option (its final use in a retail passenger car was the 1981 Camaro Z28) and police package 9C1 A/G (Malibu to 1981) and B-bodies (Caprice, Impala) until 1988 retail market GM rear wheel drive/V8s sold to the general public had a maximum 5.0liters displacement with the exception of its muscle car survivors e.g. Cruiser, Base Engine, 341 HP, 371 TQ, New Block, Aluminum Heads, Chevrolet, Small Block, Each, Crate Engine, GM 5.3L, LM7, 385 HP, Long Block, Internal Engine Balance, Aluminum Heads, Each, 4.92 out of 5 stars Aug 8, 2022 The Chevrolet 305 is a reliable, fuel efficient V8, easily capable of 200,000 miles, if maintained. In 1991, GM created a new-generation small-block engine called the "LT1 350", distinct from the high-output Generation I LT-1 of the 1970s. Despite downfalls in its aspiration restrictions, the L03 had one thing going for it: reliability (87-90 F-bodies that carry the L03 did not use a rev limiter). From 1976 onward into the early 1980s, these engines were prone to wearing out their camshaft lobes prematurely due to a combination of improper manufacturing and poor quality controls (a result of GM cost-cutting measures). Thanks mostly to a somewhat cult-like following, a number of aftermarket performance parts are also available through Crossfire-specialized manufacturers. In van configuration it produces 220hp (164kW) net flywheel at 4,600 rpm and 290lbft (393Nm) net flywheel torque at 2,800 rpm. Fuel was supplied by the two TBI units, set diagonally apart from each other, atop the unique, aluminum intake manifold. In 1967, a new design high-rise cast-aluminum dual-plane intake manifold with larger smoother turn runners was introduced for the Z/28 that the 350cuin (5.7L)/370hp 1970 LT-1 also used. We apologize for the inconvenience. 1996 LT1 Corvettes were rated at 300hp (220kW) and 340lbft (461Nm). The LM1 was first introduced for 1969 model year as a 9.0:1 255hp engine. 1992 LT1s in Corvettes were factory rated at 300hp (220kW) and 330lbft (447Nm). 1967/1968 models' cowl-induction system had an enclosed air-cleaner assembly ducted from its passenger side into the firewall cowl above the heater core. Oct 27, 2022 After 1993, its usage was limited to light trucks and SUVs until the 2000 model year while vans and commercial vehicles continued until 2003. The L69 engine produced 190hp (142kW) at 4800 and 240lbft (325Nm) of torque at 3200 rpm in the F-Body and was rated at 180hp (134kW) in the Monte SS.[29][30]. The L99 featured updated Generation II block architecture, and is externally identical to the larger 5.7 L LT1 Generation II V8. The 265 had a 3.750 inches (95.25mm) bore. ]in current production as a crate engine for marine applications and automotive hobbyists as the 'RamJet 350' with minor modifications. Torque, Ford, Each, Estimated Ship Date: Overheating and damage are likely if head gaskets or heads without 'steam' holes are used on a 400 block. In Stock, Including at a Supplier. L30 applications: 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). This engine was used in the following cars: Designed and built during the era of the gas embargo, CAFE mandates, and tighter emissions, this engine family was designed to become Chevrolet's cost-effective, all-purpose "economy V8" engine line. 530HP EFI Retrofit Dressed Long Block Crate Engines PSLS3760CTF, Chevrolet Performance LS3 525 HP Crate Engines 19432557, Chevrolet Performance LS3 495 HP Long Block Crate Engines 19432424. It used the '202' 2.02in (51.3mm)/1.6in (40.6mm) valve diameter high-performance 327 double-hump '186 and 461 heads, pushrod guide plates, hardened 'blue-stripe' pushrods, edge-orifice lifters to keep more valvetrain oil in the crankcase for high-rpm lubrication, and stiffer valvesprings. A significant improvement over the original Generation I V8 is the Generation II LT1's "reverse cooling" system, allowing coolant to start at the heads and flow down through the block. Sep 7, 2022 In 1962, the Duntov solid lifter cam versions produced 340hp (254kW), 344lbft (466Nm) with single Carter 4-barrel, and 360hp (268kW), 358lbft (485Nm) with Rochester fuel-injection. The car had modified suspension just before release to also be used in local Series Production racing (Australian Group E). Default Sort, Crate Engine, Dressed, Long Block, 383 Stroker, 436 HP, 443 TQ, New Block, Aluminum Heads, 750 cfm Carburetor, Chevy, Small Block, Each, 4.87 out of 5 stars The "Marine" intake, despite its cast iron construction, is an L31 upgrade that allows use of common Bosch-style injectors with various flow rates while still maintaining emission compliance. A fully dressed engine includes everything except front A fully dressed engine includes everything except front drive accessories (like alternators and power steering pumps), and even a warranty! Power ranged from 225 to 383hp (168 to 286kW) depending on the choice of carburetor or fuel injection, camshaft, cylinder heads, pistons and intake manifold. Engineer Ed Cole is credited with leading the design for this engine. As had been the case with earlier versions of the small-block, the 350 was available in the Beaumont sold by Pontiac Canada, which unlike its US counterparts, used Chevrolet chassis and drivelines. But it was the 350cuin (5.7L) series that became the best known Chevrolet small-block. It was the product of placing the 283cuin (4.6L) 3in (76.2mm) stroke crankshaft into a 4in (101.6mm) bore 327cuin (5.4L) cylinder-block. The 400 differed from other small blocks in that the cylinders were siamesed and therefore required 'steam' holes in the block, head gaskets, and heads to help alleviate 'hot-spots' in the cooling system at the point above the siamesed cylinders. The 19731974 L82 was a "performance" version of the 350 that still used the casting number 624 76cc chamber "2.02" heads but with a Rochester Quadra-jet 4bbl carburetor and dual-plane aluminum intake manifold, the earlier L46 350hp (261kW) 350 hydraulic-lifter cam, and 9.0:1 compression forged-aluminum pistons producing 250hp (186kW) (1971 was the first year for SAE net hp rating, as installed in the vehicle with accessories and mufflers) and 285lbft (386Nm) of torque. Unlike the Corvette, the exhaust manifolds were the more restrictive rear outlet 'log' design to clear the Camaro chassis's front cross-member. Small Block Crate Engines | Chevy Performance Parts, Emissions Standards Compliance | Chevrolet Performance. [18], Also available in the Bel Air sedan, the basic passenger car version produced 162hp (121kW) with a two-barrel carburetor. 1996 saw major revisions for OBD-II: a second catalytic converter on the F-body cars, rear oxygen sensors to monitor catalyst efficiency, and a new engine front cover with a crankshaft position sensor. All years had an 8.5:1 compression ratio. [citation needed] In 1968, the last year for factory headers, they had 1.75in (44.5mm) primaries x 3in (76.2mm) collectors. The LT4 was the special high-performance version of the new-generation LT1. We started in second, and even then there was so much torque, you'd get wheelspin through third and fourth gears." It was also used for the limited production Avanti for a few years in the 1970s. Nothing has ever been apart, all numbers match on everything. Early models produced 265hp (198kW) with a two-barrel carburetor. if ordered today, Crate Engine, Gen 3 Engine, 5.0L Mustang Coyote Crate Engine , With Manual Engine Harness and Dual Mass Flywheel, Kit, Crate Engine, 383 Stroker Long Block, 10:0:1 Compression, Hydraulic Roller Camshaft, Carbureted, Each, Crate Engine, Base Long Block, Chevy, Small Block, 396 Stroker, SBC, 350 Crate Motor, BluePrint Cylinder Heads, 3.2 out of 5 stars The 283 was adopted by other Chevrolets, replacing the 265 V8s. In mid-1996 the L05 was equipped with heads used in the 1996 G30. This block is one of three displacements, 302/327/350, that underwent a crankshaft bearing diameter transformation for 1968 when the rod-journal size was increased from the 2in (50.8mm) diameter small-journal to a 2.1in (53.3mm) large-journal and a main-journal size that was increased from 2.3in (58.4mm) to 2.45in (62.2mm). Weighing 1,350lb (610kg), with a 525550hp (391410kW) iron block and head engine positioned near the car's polar moment of inertia for responsive turn pivoting, a Hewland 5-spd. The 400 saw extensive use in full-size Chevrolet and GMC trucks; K5 Blazer/Jimmy, 1/2-ton, 3/4-ton, 1-ton, and even larger 'medium duty' trucks had an option to be equipped with a 400. The power ratings jumped to 405hp (411PS; 302kW) at 5800 rpm and 385lbft (522Nm) of torque at 5200 rpm from 1993 until its final year in 1995,[38] thanks to cam timing changes and improvements to the engine porting. Block castings remained the same between 2 and 4 bolt mains. The L48 V8 Corvette engine produced 165hp (123kW) in 1975. When combined with performance-built stock 305 heads w/larger valves or aftermarket heads, plus a camshaft upgrade, these engines can perform surprisingly well. A 350 cubic inch version was also used in the Corvette from 1982 to 1984. The engine was available in midsize A-Body and full-size B-Body passenger cars until the end of the 1976 model year. the casting number 3970010 was used by all three engines: 302, 327, and 350). Aug 3, 2022 [23] This engine was also available on the Chevrolet Camaro in 1973 and 1974. ", https://idswater.com/2020/03/31/how-much-does-a-chevy-engine-weigh/, "SBC BBC V6 Chevy Engines Specs and Sizes", "The Novak Guide to the GM Generation III+ V8 Engines", "The 10 Best Engines of the 20th Century", "Wisconsin Man Drives Millionth Mile in '91 Chevy", "1957 Chevrolet Fuel-Injected 283 V8 Ahead Of Its Time And The Competition", "Chevy Truck Engine Specification a RPO Codes, Horsepower, Displacement, Torque Ratings", "LT9 engine - ChevyTalk -The Social Network for Chevy Fans", "1983-1988 Chevrolet L69 5.0 Liter (305 CID) H.O. The 1969 L48s use a hydraulic cam, 4bbl Quadrajet carburetor, cast pistons, 4-bolt main casting number 010 Blocks & casting number 041 or 186 heads. Aug 15, 2022 GM forced the Pontiac division to share its valvetrain design in Chevrolet's new 265 V8 in 1955, so that both engines were introduced the same year with the same valve train design. Standard Catalog of Corvette, 1953-2005. A total of 6,939 cars were produced. Since GM did not assign a 1983 model year to production Corvettes, there was no L83 for 1983. Close this window to stay here or choose another country to see vehicles and services specific to your location. This change also resulted in a drop in power to 130hp (97kW) and 125hp (93kW) for California emissions cars. The LT4 was conservatively underrated at 330hp (246kW) and 340lbft (461Nm). Aug 18, 2022 In 1969, the 302 shared the finned cast aluminium valve covers with the LT-1 350 Corvette engine. Despite being discontinued, a new class of premium V8s for Cadillac and eventually Oldsmobile, the dual overhead cam V8 Northstar and its derivatives, drew heavily from the LT5's design and lessons learned from its production. In 1983, Chevrolet replaced the cast-iron intake with an aluminum version and used either 14014416 ("416") or 14022601 ("601") heads with 1.84 inch intake valves, 1.50 inch exhaust valves, 58cc chambers, and 178cc runners. Future 283 blocks were cast to accept the 3.875 bore. Over the years, every American General Motors division except Saturn and Geo used it and its descendants in their vehicles. McNally Institute", "What is the weight of a Chevy 454 engine? Introduced in 1963 on Pontiac's 389 and 421cuin (6.4 and 6.9L) drag racing engines, General Motors fitted it to the 1967 Z/28 before they used it on the L88 427cuin (7.0L) Corvette.