454 engine specs

It helps to know the specifications, and how they play in the engine's operation. ... We brought a GM Performance Parts HO 454 crate engine to Westech Performance Group's test facility in Southern ...

Feb 9, 2021 · What are the specs on a Chevy 454 engine? The Chevy 454 engine is a 454 cubic inch big-block 7.4L with a bore and stroke of 4.25 x 4 inches. The engine was underrated and exact stats are hard to find, but it could go well over 500 horsepower with the right upgrades. The engine had a relatively short lifespan, having its horsepower cut in half ... What are the specs on a Chevy 454 engine? The Chevy 454 engine is a 454 cubic inch big-block 7.4L with a bore and stroke of 4.25 x 4 inches. The engine was underrated and exact stats are hard to find, but it could go well over 500 horsepower with the right upgrades. The engine had a relatively short lifespan, having its horsepower cut in half ...454 Big Block Performance Specs. The original LS5 engine was introduced with 390 hp and 500 lb-ft of torque, while the LS6 was rated at 450 hp. By the time 1972 was reached, change of power calculations along with reduced power for emissions control resulted in a drop to max power rating of 270 horsepower with a peak torque of 468 lb-ft. As you ...Dec 8, 2021 ... 6:02. Go to channel · 340 horsepower 3.6 LS 4 cylinder engine by Blue Print Engines. Automotive Antics•537K views · 11:46. Go to channel ...The lower displacement 366ci truck engine became the 6.0L. The 454 stayed. GM added the 502/8.2L and 572/9.4L to its aftermarket performance parts division, producing a new family of power stump pullers. ... (Image/Jim Smart) Rod bolts are hand-snugged, then, torqued to specifications. Jeff has chosen Clevite CLE-CB-743P rod …The Biggest Chevy Muscle Car Motor. When the 454 cubic inch engine appeared in the Chevrolet catalog in 1970, it was intended to rule the streets by building on the same Mark IV design architecture that had defined the 427 cubic in V8 that preceded it. The 454 maintained the 427's 4.25 inch bore, but it increased the stroke to 4 inches, and …

It has a bore of 4.25 inches and a stroke of 4.00 inches. The compression ratio of this engine is 8.5:1, allowing it to run on regular unleaded gasoline. Equipped with a four-barrel carburetor, the 1975 Chevy 454 engine delivers impressive horsepower and torque. It has a factory-rated power output of 215 horsepower at 3,600 RPM and a torque of ...Jun 26, 2023 ... Tearing down our Big Block chevy and we find out this wasn't just your ordinary 454 Block... Don't forget to head over to www.baldeagle.com ...Feb 9, 2021 · What are the specs on a Chevy 454 engine? The Chevy 454 engine is a 454 cubic inch big-block 7.4L with a bore and stroke of 4.25 x 4 inches. The engine was underrated and exact stats are hard to find, but it could go well over 500 horsepower with the right upgrades. The engine had a relatively short lifespan, having its horsepower cut in half ... Jan 18, 2024 · The 1986 Chevy 454 engine, also known as the Chevrolet Big Block, is a V8 engine that belongs to the Generation IV family of engines. It features a cast-iron block and cylinder heads, providing durability and strength. The engine has a displacement of 7.4 liters, or 454 cubic inches, hence the name. This large displacement allows for powerful ... Jan 16, 2024 · The 1976 Chevy Truck with its 454 engine remains an iconic choice for truck enthusiasts. Its impressive power, reliability, and durability make it a timeless classic. By following the recommended engine oil specifications and service intervals, you can ensure that your Chevy Truck’s 454 engine continues to perform at its best for years to come.

1972 Chevrolet Chevelle SS 454. Engine Used. 454ci/270hp. Zero to Sixty. 8.0 sec. Quarter Mile. 15.1 sec @ 93.0 mph. Even as the Chevelle as a muscle car began its decline in 1971 and continued not only through 1972 but for the rest of the time it existed, the Chevelle was still rated the second most popular car in America in 1972.Feb 18, 2024 · Surprisingly, the 454 big-block V8 engine laid down 330 horsepower and 475 pound-feet of torque. Its truck-based 454 engine was tuned for torque with a surprise of reaching nearly 500 lb. feet without being loud. The engine block can produce a large power output. It is a good engine for performance vehicles and a great option during a gas crisis. Feb 6, 2021 ... After building a 623-horsepower big block engine, Joe and Mike drop it into an '85 Monte Carlo, convert the car to an automatic transmission ...The 1990 Chevy 454 engine is a big-block V8 engine that belongs to the Chevrolet Mark IV engine family. It has a displacement of 7.4 liters or 454 cubic inches, hence the name. This engine features an overhead valve (OHV) design with two valves per cylinder, providing excellent low-end torque and power. The Chevy 454 engine utilizes a …Apr 12, 2022 ... 730-HP BBC ON 87-OCTANE!! HOW TO: 700-HP BBC COMBOS (ALL MOTOR, LOW COMP 540, SC 454 & TURBO 454) · Comments100.

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Rock-n-Roller: Adding a Roller Cam to our Junkyard 454 Paid Off Big! Loyal readers of Super Chevy will immediately recognize this 454 (aka BBC Big Hero VI) as the very same engine we plucked from ...454 cid specifications standard displacement (liter/cid) 7.4l / 454 cylinders v-8 bore & stroke (inches) 4.25 x 4.00 compression ratio 8.4:1 fuel system 4 bbl holley ignition delco electronic full throttle operation (carbureted) 4000 - 4400 rotation (flywheel) (opposite rotation available on sportpac only) ccw/cw transmission - sportpac only ...The Family Tree. Unlike lesser engines, the evolution of the big-block Chevy can be traced back to a prestigious great-great-grand pappy, the high-performance 425-hp L78 396, first available in 1965 Corvettes and Chevelles. Even though the big-block was destined to eventually find a home in trucks and family sedans, it started off as a serious ...When it comes to optimizing the performance of your Kohler engine, one crucial factor that cannot be overlooked is the torque specifications. Torque specs refer to the specific amo...1970 Chevelle Turbo-Jet 454 V8 LS6 Engine Specs RPO Z15 / LS6 Engine 7.4 Liter, Mark IV 454 Cubic-Inch V-8 Horsepower 450 Horsepower @ 5,600 RPM Torque 500 Pound-Feet @ 3,600 RPM ...Windows only: Planning an upgrade soon? Save yourself the web searches for your specs and download Speccy. Speccy does a quick scan of your machine and gives you a complete rundown...

Chevy 454 Engine Specs. Specs for the 1970-1976 big block 454 cid engine are as follows: Engine: Chevrolet 454 Big Block. Displacement: 454 cid (7.4L) Block/Heads: Cast Iron. Configuration: 90° V8. Bore x Stroke: 4.25″ x 4.0″. Compression Ratio: 10.25:1, 11.25:1, 8.2:1. Firing Order: 1-8-4 … See moreWhat Is The Best Big Block Chevy Engine? The answer to this question depends on the application and the BBC engine specs you need. Regarding parts availability, the 454 engine has the most availability of parts in comparison to the other engine sizes. This is due to the number of blocks available for the 7.4 liter versus a 396, 402, 427, or ...Of the three versions produced, the LS6 version was the high-performance option for Corvettes, Camaros, and Chevelles. This package supplied 450 horsepower and 500 lb-ft of torque. The ’70 version of the LS6 454 was a pinnacle year as, by 1971, Chevrolet started to detune the engine. The block's dimensions and surfaces are carefully checked.We deliver the 454 HO with a water pump, balancer, 14-inch flexplate, and aluminum intake manifold. Add a carburetor, ignition system, and starter and your budget Big-Block will be ready to roar. Show More. 454 HO TECH SPECS: Engine Type: Chevy Big-Block V-8; Displacement: 454ci; Bore x Stroke: 4.250'' x 4.000'' Block: Cast-iron with four-bolt ...In that spirit, we present the Blue Collar Chevy 454. Our lowly Chevy 454 was built on a shoestring budget with a very mild Summit Racing hydraulic camshaft and only a reconditioning of the ...Detailed specs and features for the Used 1993 Chevrolet C/K 1500 Series 454SS including dimensions, horsepower, engine, capacity, fuel economy, transmission, engine type, cylinders, drivetrain and ...The 1989 Chevy 454 engine requires engine oil that meets the following specifications: – Oil Type: SAE 10W-30 or SAE 5W-30. – API Service Classification: SG or higher. It is essential to use high-quality engine oil that meets these specifications to ensure optimal lubrication and protection for the engine components.Proper engine oil is crucial for maintaining the performance and longevity of any engine, including the 1997 Chevy 454. Here are the recommended engine oil specifications and service intervals for this engine. Engine Oil Specifications: – Type: SAE 5W-30 or SAE 10W-30. – API (American Petroleum Institute) Certification: SG or … While the majority of big-blocks displaced 454 inches, Chevy did build a production engine displacing 496ci. But the future of the Rat appears to be stroker versions and today you could easily build a stock deck height Rat motor at 500-plus-ci using off-the-shelf parts. It’s hard to tell a Rat by its cover.

The 1979 Chevy Truck with its 454 engine was a true powerhouse, delivering impressive power and torque. Whether you were hauling heavy loads or simply cruising down the highway, this engine provided the reliability and performance that truck enthusiasts desired. By following the recommended oil specifications and service intervals, you can keep ...

The information below is divided into the following sections: package contents, component information, 454 engine specifications, additional parts that you may need to purchase, torque specifications, start-up and break-in procedures, and a service parts list.The 1976 Chevy 454 engine features a V8 configuration, meaning it has eight cylinders arranged in a V shape. This design provides excellent power and torque, making it suitable for heavy-duty applications. With a displacement of 454 cubic inches (7.4 liters), this engine is capable of producing substantial horsepower and torque.This all-new engine is filled with a forged 4340 steel crank with 4.375-inch stroke, shot-peened, forged 4340 H-beam rods, and forged-aluminum pistons with full-floating wristpins. The 572 makes ...It helps to know the specifications, and how they play in the engine's operation. ... We brought a GM Performance Parts HO 454 crate engine to Westech Performance Group's test facility in Southern ...If detonation were to occur, the dyno would have show a reduction in power and torque. Instead, it showed a 7-horsepower increase and a 5-lb-ft rise in torque. This was a legitimate pump-gas big ...Advertisement Kindle Paperwhite measures 6.7 inches (169 millimeters) high by 4.6 inches (117 millimeters) wide. It is a scant 0.36 inches thick (9.16 millimeters for the WiFi-only...Learn about the history, specifications and horsepower of the Chevy 454 V8 engine, a high performance engine used in muscle cars like the Camaro, Corvette and Chevelle from 1970 to 1996. Find out the variations, features and performance of the LS5, LS6 and LS7 models and how they compare to other engines.

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Apr 8, 2021 ... Not too many people have engine hp numbers and at the tire hp numbers. ... Add 231 Horsepower to a Motorhome Engine ... Class A Motorhome 454 Engine ...Chevrolet gasoline Big-block Mark IV 454 CID (7.4 L) L19 engine general specifications. Parameter Value; Type: Internal Combustion Reciprocating: Fuel Type: Gasoline: Cylinder Configuration: V8: Engine Displacement: 7.44 L 454 in³ 454 in³: Bore: 10.8 cm 4.25 in 4.25 in: Stroke: 10.16 cm 4 in 4 in: Compression Ratio: 7.9:1See All 21 Photos. The stock, 114cc, heart-shaped combustion chambers were designed for a 4.50-inch bore (the 8100 bore measures 4.25). The chambers overlap the 496's bores, which shrouds the ...3) All 73-74 Corvette 454 cid engines used a cast nodular iron crankshaft; 4) All 70-74 Corvettes with 454 cid engines, except 71 LS-6, used the same size intake and exhaust valves which, as I recall, were 2.06" intake and 1.72" exhaust. 5) 1970 LS-5 cylinder heads were unique to that year.Chevrolet Performance’s 454 HO crate engine is a Big-Block bargain – an affordable engine with performance specs that will make you think it’s 1970 all over again. PART NO. 12568774. 438 HP @5300 …While the majority of big-blocks displaced 454 inches, Chevy did build a production engine displacing 496ci. But the future of the Rat appears to be stroker versions and today you could easily build a stock deck height Rat motor at 500-plus-ci using off-the-shelf parts. It’s hard to tell a Rat by its cover.1972 Chevy 454 Engine Specs. The 1972 Chevy 454 engine is a powerful and iconic V8 engine that was widely used in various Chevrolet vehicles during the 1970s. Known for its impressive performance and reliability, the 454 engine has become a favorite among car enthusiasts and collectors.Chevrolet gasoline Big-block Mark IV 454 CID (7.4 L) L19 engine general specifications. Parameter Value; Type: Internal Combustion Reciprocating: Fuel Type: Gasoline: Cylinder Configuration: V8: Engine Displacement: 7.44 L 454 in³ 454 in³: Bore: 10.8 cm 4.25 in 4.25 in: Stroke: 10.16 cm 4 in 4 in: Compression Ratio: 7.9:1Chevrolet's famous "big-block" 454 V8 was introduced in 1970, and replaced the 427 as the top-dog engine option. It's not often that an engine's debut year turns out to be its zenith year, but that certainly was the case with the 454. Besides being an optional workhorse engine for the pedestrian full-size Impala and Caprice, it also powered the Corvette and …Jan 16, 2024 · Engine Oil Specifications. To keep the 1977 Chevy 454 engine running smoothly, it is essential to use the correct type of engine oil. The recommended engine oil specifications for this engine are as follows: – Oil Type: SAE 10W-30 or SAE 10W-40. – API Service Classification: SF or SG. It is important to note that using the correct viscosity ... ….

454 Big Block Performance Specs. The original LS5 engine was introduced with 390 hp and 500 lb-ft of torque, while the LS6 was rated at 450 hp. By the time 1972 was reached, change of power calculations along with reduced power for emissions control resulted in a drop to max power rating of 270 horsepower with a peak torque of 468 lb-ft. As you ...The Biggest Chevy Muscle Car Motor. When the 454 cubic inch engine appeared in the Chevrolet catalog in 1970, it was intended to rule the streets by building on the same Mark IV design architecture that had defined the 427 cubic in V8 that preceded it. The 454 maintained the 427's 4.25 inch bore, but it increased the stroke to 4 inches, and … The LSX454 drag race engine must have the valve lash adjustment maintained. Proper valve lash is 0.020” for both the intake and exhaust valve. Valve lash had been set during engine build, but should be rechecked once the engine is at operating temperature and then re-adjusted after every 50 drag race runs. The LSX454 drag race engine must have the valve lash adjustment maintained. Proper valve lash is 0.020” for both the intake and exhaust valve. Valve lash had been set during engine build, but should be rechecked once the engine is at operating temperature and then re-adjusted after every 50 drag race runs.It was part of the popular Chevrolet small-block engine family, known for its durability and performance. Here are the key specifications of the 1974 Chevy 350 engine: – Engine Type: V8. – Displacement: 350 cubic inches (5.7 liters) – Bore x Stroke: 4.00″ x 3.48″. – Compression Ratio: 8.5:1.In fact, the LS6 (optional motor) that was available in 1971 was one of the highest-output 454 engines in production for its configuration. The fire-breathing Rat blew brimstone at the rate of 425 hp.24. At Jim Kid Motorsports, our project engine made 584 horsepower and 594 lb-ft of torque, but that was made through LS7 exhaust manifolds. They won't fit the Gen 5 Camaro chassis, so we'll have ...Detailed specs and features for the Used 1991 Chevrolet C/K 1500 Series 454SS including dimensions, horsepower, engine, capacity, fuel economy, transmission, engine type, cylinders, drivetrain and ...Find CHEVROLET 7.4L/454 Chevy big block Gen V Crate Engines and get Free Shipping on Orders Over $109 at Summit Racing! $5 Off Your $100 Mobile App Purchase - Get the App Vehicle/Engine Search Vehicle/Engine Search Make/Model SearchTecumseh engines are renowned for their performance and durability. Whether you’re a homeowner in need of a reliable lawnmower or a professional landscaper looking for a powerful e... 454 engine specs, 24. At Jim Kid Motorsports, our project engine made 584 horsepower and 594 lb-ft of torque, but that was made through LS7 exhaust manifolds. They won't fit the Gen 5 Camaro chassis, so we'll have ..., Four Speed Manual Transmission (Close Ratio) 390 Horsepower LS5 Engine: 3,768 lb. Pounds / Horsepower: 9.66. Four Speed Manual Transmission (Close Ratio) 460 Horsepower LS7 Engine*: 3,641 lb. Pounds / Horsepower: 7.91. Turbo Hydra-Matic. Automatic Transmission. 300 Horsepower Base Engine: 3,661 lb., For the record, this 13.1:1, naturally aspirated and single Dominator-fed big-inch LS engine is officially rated at 770 horsepower at a 7,000 rpm and 612 lb.-ft. of torque at 5,600 rpm. Those figures might be a little conservative. Notably, that’s a 50-horsepower increase over Chevrolet Performance’s own ZZ572/720R drag race crate engine ..., The Chevy 454 engine is a big-block V8 engine that was first introduced in 1970. It has a displacement of 454 cubic inches, which is equivalent to 7.4 liters. This large displacement allows the engine to produce ample power and torque, making it suitable for heavy-duty applications. The engine features an overhead valve (OHV) configuration ..., See the complete technical specifications and performance information for the 1970 Chevrolet Corvette, including engine specs, acceleration, & quarter mile. Get Ad-Free Access: Just $39/year. ... ENGINE SUFFIX: CGW: 454 CUBIC INCH, 390 HORSEPOWER, AUTOMATIC TRANSMISSION CRJ: 454 CUBIC INCH, 390 …, Engine Oil Specifications. The 1978 Chevy Truck’s 454 engine requires high-quality engine oil that meets the following specifications: – Viscosity: 10W-30 or 10W-40. – API Service Classification: SF or SG. It is important to use engine oil that meets these specifications to ensure proper lubrication and protection for the engine components., 454ho engine (19433409 base) long block specifications part no.rev 07mr23 19172102 sheet 1 of 18 all information within above border to be printed exactly as shown on 8.5 x 11 white 16 pound non-bond recyclable paper. print on both sides, excluding templates. to be unitized in accordance with gmcca specifications. part no. , The heads used on the 454 H.O. are iron rectangle-port heads that are the service-replacement heads for the late-model Gen V and VI 454 engines. The heads feature a 118cc combustion chamber, 2.19 ..., What are the specs on a Chevy 454 engine? The Chevy 454 engine is a 454 cubic inch big-block 7.4L with a bore and stroke of 4.25 x 4 inches. The engine was underrated and exact stats are hard to find, but it could go well over 500 horsepower with the right upgrades. The engine had a relatively short lifespan, having its horsepower cut in half ..., Jan 1, 2024 · Flexplate (P/N 10185034): 14". Recommended Fuel: Premium pump. Ignition Timing: 36° Total @ 4,000 rpm. Maximum Recommended rpm: 5500. Balanced: External. Compare Big-Block Engines. Mobil 1 is now The Official Motor Oil of Chevrolet Performance. View Engine Fill Chart. An all-forged reciprocating assembly makes the ZZ454 big block crate engine ... , Chevrolet Performance’s 454 HO crate engine is a Big-Block bargain – an affordable engine with performance specs that will make you think it’s 1970 all over again, including 438 horsepower and 500 asphalt-wrinkling lb.-ft. of torque. A latest-generation block casting with four-bolt main caps is the Big-Block engine’s foundation and ..., Oct 16, 2013 ... The 454 is the size of the engine. Tonawanda is the location they were built. I don't have a complete list of GM plants that built 454s, but ..., The horsepower output of the 1991 Chevy 454 engine was rated at 230 horsepower, while the torque reached 385 lb-ft. These specifications made it a capable engine for towing and hauling heavy loads. The valvetrain of the 454 engine was based on the Overhead Valve (OHV) design, which allowed for efficient airflow and enhanced …, We deliver the 454 HO with a water pump, balancer, 14-inch flexplate, and aluminum intake manifold. Add a carburetor, ignition system, and starter and your budget Big-Block will be ready to roar. Show More. 454 HO TECH SPECS: Engine Type: Chevy Big-Block V-8; Displacement: 454ci; Bore x Stroke: 4.250'' x 4.000'' Block: Cast-iron with four-bolt ..., The Family Tree. Unlike lesser engines, the evolution of the big-block Chevy can be traced back to a prestigious great-great-grand pappy, the high-performance 425-hp L78 396, first available in 1965 Corvettes and Chevelles. Even though the big-block was destined to eventually find a home in trucks and family sedans, it started off as a serious ..., This engine, known as the LS5, produced 365 horsepower, an increase from the 360 horsepower produced by the same model in 1970. The famed LS6 454 from the 1970 Chevelle was initially said to be part of the 1971 model year, though none were put into any of the ’71 Chevelles. Since the 454 was the only engine that required an SS package, …, LSX 454 599HP PACE EXCLUSIVE CRATE ENGINE WITH MSD ATOMIC INTAKE. A complete turn-key exclusive build from Pace Performance features a full MSD Atomic Intake with injectors and throttle body. With nearly 600 HP and 572 ft-lbs. of torque, this high-performance engine takes up the same space under the hood as production LS engines., The 1989 Chevy 454 engine requires engine oil that meets the following specifications: – Oil Type: SAE 10W-30 or SAE 5W-30. – API Service Classification: SG or higher. It is essential to use high-quality engine oil that meets these specifications to ensure optimal lubrication and protection for the engine components., Specs datasheet with technical data and performance data plus an analysis of the direct market competition of Chevrolet Suburban K2500 7.4L V-8 EFi in 1995 the model with 5-door sport-utility wagon body and V-8 7443 cm3 / 454 cui, 171.5 kW / 233 PS / 230 hp (SAE net) of power, 522 Nm / 385 lb-ft of torque, 4-speed automatic powertrain offered since …, These 454 big block HP engines offer 525 horsepower and have a hydraulic roller camshaft. Choose a Chevy 454ci big-block ATK crate engine at JEGS High Performance! ... Engine Specifications. Horsepower: 525 hp; Torque: 550 lb/ft; Block Information: Seasoned OE 1991-1995 Gen V 4 bolt main 1pc seal (no mechanical fuel pump provision) Bore/Stroke ..., The 454 is based on the World Products' Motown iron block, and the biggest news about it, beyond the huge displacement alone, is the 4.250-inch bore. That's …, May 1, 2021 ... Go to channel · HOW TO: MAKE 300 HP, 400 HP & 500 HP WITH PEANUT PORT BBC HEADS (HUMBLE JUNKYARD GEN V 454 ). Richard Holdener•96K views · 20:47., Jan 24, 2024 · Proper engine oil is crucial for maintaining the performance and longevity of any engine, including the 1997 Chevy 454. Here are the recommended engine oil specifications and service intervals for this engine. Engine Oil Specifications: – Type: SAE 5W-30 or SAE 10W-30. – API (American Petroleum Institute) Certification: SG or higher. , Some specs of a Caterpillar C7 engine are a maximum power rating of 300 bhp and a rated speed of between 1800 and 2200 rpm. It is an inline 6, 4-stroke-cycle engine with a displace..., Tecumseh engines are renowned for their performance and durability. Whether you’re a homeowner in need of a reliable lawnmower or a professional landscaper looking for a powerful e..., 3) All 73-74 Corvette 454 cid engines used a cast nodular iron crankshaft; 4) All 70-74 Corvettes with 454 cid engines, except 71 LS-6, used the same size intake and exhaust valves which, as I recall, were 2.06" intake and 1.72" exhaust. 5) 1970 LS-5 cylinder heads were unique to that year., Engine Oil Specifications: – Oil Type: The 1995 Chevy 454 engine requires a high-quality motor oil with a viscosity of 10W-30 or 10W-40. It is important to choose an oil that meets the API (American Petroleum Institute) service classification of SJ or higher. – Oil Capacity: The engine has an oil capacity of approximately 6 quarts ..., The 454 cubic-inch LS4 would serve as one of General Motors’ final big-block powerplants, to take up residence beneath the Corvette’s hood. LS4 History. The …, What’s Coming From Ford: 1,200 lb-ft of Torque Power Stroke Diesel Engine. The Chevrolet 454 LS6 Was The Peak Of GM Big Block V8 Performance. Slammed '62 Ford Country Squire Sporting a 900hp Diesel Swap. In 1970 the largest Mark IV motor arrived on the scene. Displacing 454 cubic inches it was first offered in the Chevrolet Corvette ..., Flywheel / Flexplate: Like all big block V8 engines, the ZZ454/440 engine has 3.58" diameter flywheel flange bolt pattern. This engine comes equipped with a 14" diameter flexplate with a 168 tooth ring gear, GM Part Number 10185034. If your application requires a flywheel, GM Part Number 14096987, should be used., Apr 23, 2023. #3. Agree w/t. Gen 5-6. I'd be more inclined to gen 5 given carbureted. Mercs mpi 7.4/454 engines used the final designed gen 6 for most if not all of the production run. I've asked here about the history of the 454 due to its outstanding design and performance in a marine engine application but haven't gotten much response., The information below is divided into the following sections: package contents, component information, 454 engine specifications, additional parts that you may need to purchase, torque specifications, start-up and break-in procedures, and a service parts list. ... 454 engine when installed in a vehicle originally equipped with a big block V8 ..., LS-5 454 big block Chevy engine specs for the 1970 model year. LS-6 454. Released the same year as the LS-5, the LS-6 was the top dog as far as stock 454 hp went. Found in the 1970 Chevelle SS 454, it provided the owner with 450 horsepower and the same earth twisting 500 lb-ft of torque.