Chevy 454 Engine Specs. ), As impressive as the ZL1 was in its day, actual engine dyno tests of a certified production line stock ZL1 revealed 376hp (280kW) SAE net with output swelling to 524hp (391kW) SAE gross with the help of optimal carb and ignition tuning, open long tube racing headers, and with no power-sapping engine accessories or air cleaner in place. Mark IV engines also found themselves widely used in power boats. 348cuin (5.7L), available from 1958 to 1961 in cars, and in light trucks through 1964; 409cuin (6.7L), available from 1961 to 1965; and. For 1991 General Motors made significant changes to the Big-Block resulting in the Generation V. The block received a one-piece rear seal and all blocks received 4-bolt mains. The considerable increase in power of the LS427/570 crate engine is primarily thanks to the employment of a new, specially developed high-lift hydraulic roller camshaft with 0.591-inch intake and 0.590-inch exhaust lift. Also now you can get crate engines based on the SB chevy with 454 ci. The original arose in the form of the 396ci L78 engine, which made 425 horsepower and 445 lb-ft of torque. C13z4744. The program aims to guide you every step of the way. The Chevrolet 454-cubic-inch, or 7.4-liter, V-8 engine was a brawny gas-guzzling powerplant that should have died an ignoble death after the 1973 fuel crisis. Pre-Owned. Unless specifically noted to the contrary herein, vehicles equipped with Chevrolet Performance parts that are emissions-related may not meet U.S., Canadian, and state and provincial laws and regulations relating to motor-vehicle emissions. It responds excellent to basic modifications such as a 266H or 268H cam Holley 750Dp/Performer-2 Intake and Headers to get trouble free 400+Hp and tons of torque. [36][37], It has been suggested[by whom?] Hand-assembled at the Performance Build Center in Bowling Green, KY, Chevrolet's LS7 crate engine (LS-Series Small-Block V-8) can provide 505 hp of max output at 6,300 rpm and 470 lb.-ft. of peak torque at the same rev figure. These 454s with four-barrel carburetors developed 230 horsepower and 360 foot . Indeed, the AHRA ASA (Showroom Stock Automatic) Class record-holding Chevelle LS-6 for the 1970 racing season posted a best-of-season trap speed of 106.76mph (172km/h),[38] which suggests something on the order of 350 "as installed" (SAE Net) HP for a 3,900 pounds (1,769kg) car-and-driver combination. Many of these engines were ordinary Chevrolet production models that were fitted with the necessary accessories and drive system to adapt them to marine propulsion. Julybien Atadero writes from the island of Cebu covering various automotive topics including new sports cars, classic muscles, pickup trucks and SUVs. This engine was made from the 1960s until 2004.The 366 used 4 rings on the pistons, as it was designed from the very beginning as a truck engine. However, power ratings rapidly declined throughout the 1970s due to lower compression, emissions laws, and SAE power measurements. Cast aluminium rocker covers were fitted in place of stamped steel covers, featuring a screw-in filler cap. that the LS-6 was nominally substantially underrated, which was a common practice of American car makers;[citation needed] and that the engine actually produced well over 500hp (373kW) as delivered from the factory. Fuel is delivered through eight-port injectors, with the engine breathing through CNC-machined high-flow aluminum cylinder heads featuring symmetrical ports. Whether youre looking to buy a classic muscle car, need a cheap truck or van for towing and hauling, or want to build a performance engine for a race car, the 454 is a great option. The site's quote form is easy to fill out, and includes information about the engine's availability, price, and mileage. Find everything from vital data about your engines capabilities to how to install it into your build. 575lb or 261kg dressed). $250 rebate on the purchase of a Chevrolet Performance Transmission within 180 days of the purchase of any Chevrolet Performance CrateEngine, $250 rebate on the purchase of a Chevrolet Performance Transmission within 180 days of the purchase of any Chevrolet Performance Crate Engine. The next thing to look out for are various issues with the cylinder head. As part of the head redesign, the spark plugs were relocated so that they entered the combustion chamber at an angle relative to the cylinder centerline, rather than the straight-in relationship of the W-series engine. Throughout its production and until its final days found under the hood of GM trucks, the Chevy 454 was also a staple of drag cars across the nation and remains so to this day. If youre pursuing a classic muscle car or looking through junkyards to find yourself a 454, here are the cars you should be looking for: That being said, it is worth noting that the 454 big-block V8 was an option across all of those platforms. What Mcfarlingmak said. The 1969 ZL1 version of the 427 engine was developed primarily for Can-Am racing, where it was very successful in cars like the McLaren M8B. The original version in the 1970 Corvette came with 390 horsepower and 500 pound-feet of torque. The Engine VIN Number is the last 6 or 9 digits of the vehicle's VIN number. It was also available in the full size Impala/Caprice through model year 1976. The LS-7 was later offered as a crate engine from Chevrolet Performance with an officially rated power minimum of 500hp (373kW) gross. The Vortec 7400 uses hydraulic roller cams and more advanced technology. Furthermore, it boasts a 116-degree lobe separation angle. Chevy 454 engine 7.4 V8 91-95 comp engine : Alternative Views: CHEV 454 91-95 COMP ENG Our Price: $ Stock Status:In Stock. It was part of Chevy's penultimate generation of their big block series, and it is sometimes called the 454 Vortec. The Vortec 7400 L21 was a commercial version of the Chevrolet Big-Block engine used in the medium duty truck platform. 2023 Vehicle History Inc. All Rights Reserved. However, even the modern 454 HO crate engine shares the same general design. The L88 version of the 427 is the most desirable variant. The so-called Mystery Motor, known internally as the Mark II or Mark IIS, is a race-only[18] engine produced for the 1963 season. The first major update to the Chevrolet 7.4L big block engine came in 1987 with the switch to EFI. The cylinder bore is 4.25-inches (107.95 millimeters), and the stroke is four inches (101.6 millimeters). GM ASEP technicians can earn their degree in as little as 2 years, kick-starting a fulfilling career in the automotive industry. Part Number: MLL-PSLS4272CTFK. Fifty RPO Z11 cars were produced at the Flint GM plant. Visit www.chevroletperformance.com/emissions for more details. This decision would hold throughout the 1980s, with the Chevy 454 gaining a fuel injection boost in 1987. The valves continued to use the displaced arrangement of the W-series engine, but were also inclined so that they would open away from the combustion chamber and cylinder walls, a design feature made possible by Chevrolet's stud mounted rocker arms. Unless youre picking up a super clean 7.4L big block then expect to shell out a bit of money to replace old, worn parts. Owing to the appearance of the compound angularity of the valves,[24] the automotive press dubbed the engine the "porcupine" design. The initial version of the engine produced 360hp (268kW) with a single 4-barrel Carter AFB carburetor. [clarification needed][citation needed]. In 1973, the 454 first became an option in the Chevy and GM truck lineup. But since, things can always get better, a new yet more powerful version of this mill the new LS427/570 crate engine is coming to town. Dec 8, 2015. It retained the same bore diameter as the old 7.4L (454cuin) big-blocks, but the stroke was upped by 9.4mm (0.37in) to reach 495.95cuin (8.1L), for a total bore and stroke of 4+14in 4.37in (107.95mm 111.00mm). Chevrolet Performance dealers will begin deliveries in early 2022.[53]. Most new 454 engines from this year were released with a seven-year or 100,000-mile warranty, and these engines are . The 1970 LS5 featured a standard cast-iron block, which housed a forged-steel crankshaft, with a total of five main bearings. Chevy 7.4L big blocks made their way back around in the mid to late 1990s in the form of the Vortec 7400. Just two production Corvettes (factory option at dealer) and 69 Camaros (non-dealer option from factory - COPO 9560) were built with the ZL1. The Chevrolet 454 big block was introduced in 1970 and is still available today as a crate engine. Click for more details. For 1987 ad earlier applications Need more power? It started life as a major upgrade from the 348/409 W motor. Gone was the chamber-in-block design of the W-series engine (which caused the power curve to drastically dip above 6500 rpm), and in its place was a more conventional wedge chamber in the cylinder head, which was now attached to a conventional 90 degree deck. The firing order of older big-block engines is 1-8-4-3-6-5-7-2[60] while Vortec 8100's firing order is 1-8-7-2-6-5-4-3. When hes not writing or under one of his project cars, youll often find him producing video and photography for his "Cursed Forever" YouTube channel. The engine is a pretty good one as it delivers 240HP and 355 torque. It was also in a number of RVs and other applications. King of the hill in terms of raw power, the LS-7 was intended to be a production engine, but wound up being offered as a 500-hp crate engine (PN 3965774) by Chevrolet Performance. Click for more details. Learn how and when to remove these template messages, Learn how and when to remove this template message, "1988 Lola T - Corvette Gr C ex Le Mans 1990 with 10,5 Liter Engine | Classic Driver Market", "The Sickest Corvette Race Cars From Motorsports History", "2nd Gen Camaro Component Weight Database", "How Much Does a Small Block Chevy Engine Weight? L71 + aluminium heads; RPO L89 also applied to L78 "375 HP" 396 engine with aluminium head option. The LSX 454 crate engine is a 21st-century upgrade to the legendary Chevy 454 big block race engine. While I like peace and quiet, I love playing with my kid. A high-rise, two-piece aluminium intake manifold and dual Carter AFB carburetors fed a 13.5:1 compression ratio to produce an under-rated 430hp (321kW) and 575lbft (780Nm). Additionally, the LS7 came to fruition but was never available to the public on standard Chevy or GM vehicles. It also made its way into the popular 1990-1993 Chevy 454 SS. Additionally, the bore and stroke remained the same throughout the entire production run as well. [citation needed]. The combustion chamber of the W-series engine was in the upper part of the cylinder, not the head, the head having only tiny recesses for the valves. As with the 265 and 283cuin (4.3 and 4.6L) "Small Block" engines, the W-series valve gear consisted of tubular steel pushrods operating stud-mounted, stamped-steel rocker arms. The engine block had 4.84-inch (123mm) bore centers, two-bolt main bearing caps, a "side oiling" lubrication system (the main oil gallery located low on the driver's side of the crankcase), with full-flow oil filter, and interchangeable cylinder heads. Part Number: MLL-PS4541CT. L-37: produced 1965 similar to L-78 except for having hydraulic lifters and slightly milder cam; 2-bolt main caps; designed specifically for the 1965. This engine combination would be outstanding in your car, street rod, truck, 4X4, or marine application. Head gasket failures are another potential issue. It also comes dressed with great-looking, orange powder-coated valve covers with engraved LSX454 logos. The bore was increased to 4+14in (108mm), with power ratings varying widely depending on the application. However, after 2001, the 454 no longer was an option for production GM vehicles. Rebate form and details available at chevrolet.com/performance/offers. It produced 330hp (246kW) (1970), 300hp (224kW) (1971), 210 or 240hp (157 or 179kW) (1972 net horsepower, single or dual exhaust). Symptoms are similar to old, leaking gaskets and its also generally a fairly minor issue. It had a bore x stroke of 4.094in 3.760in (104mm 95.5mm),[25][26] and produced 375bhp (380PS; 280kW) at 5600 rpm and 415lbft (563Nm) of torque at 3600 rpm. By Jason Reiss June 07, 2013. It generally occurs when the engine is under load, so it may be most noticeable climbing hills, while towing, etc. Offer valid 1/1/23 to 12/31/23. It was available as an option for all Chevy trucks until 1979, when Chevy made it exclusively available to heady-duty trucks, meaning it was no longer an option for half-tons. In 1987, the 454 switched from a carburetor to fuel injection, bumping power to 255 horsepower and 405 lb.-ft. of torque. The ZZ632 sits at the top of our unparalleled crate engine lineup as the king of performance. 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