In addition, a 340 hp (254 kW) version of the 409 engine was available from 1963 to 1965, with a single 4-barrel cast iron intake mounting a Rochester 4GC square-bore carburetor, and a hydraulic-lifter camshaft. The Mark IV differed from the W-series engine in the placement of the valves and the shape of the combustion chambers. Some of the components were developed to enhance the engine's reliability during high RPM operation, possibly justifying the use of the description "heavy duty." On December 17, 1960, the 409 engine was announced along with the Impala SS (Super Sport) model. Project did not proceed.[8]. [12] The solid lifter version was capable of being operated in the upper 6000 rpm range, and when installed in the 1965 Corvette, was factory-rated at 425 hp (317 kW). L-36: produced 1966–9, had 10.25:1 compression, Holley or Q-jet carburetor, nodular iron crankshaft, hydraulic lifters, oval port closed chamber heads, and two-bolt main caps. favorite this post Feb 22 Small Block; Big Block; Circle Track Racing; Goodwrench Engines; Transmissions. Racing-spec cam, high-flow aluminium heads (casting #s varied by model year) and some upgraded, competition-grade parts, Aluminium block with open chamber "3946074" aluminium heads (the early Corvette RPO engine featured a closed chamber head); cam even "hotter" than L88's; upgraded parts similar to L88's, L88-ZL1 hybrid; iron block with aluminium heads. See all 28 photos This 1965 Mark IV 396ci big-block Corvette engine cutaway display was used at the World's Fair in New York in 1965. Although introduced as the Vortec 7400 in 1996, it was basically a 454 Big-Block with a hydraulic roller cam, parts more suitable for use in light duty trucks, and more advanced technology. Also the valvetrain became non-adjustable and the provisions for a mechanical fuel pump were eliminated. However, most of these items were racing parts originally designed for Can-Am competition that found their way onto dealers' shelves, and were meant to boost the engine's power output. or Best Offer +$10.85 shipping. $37.99. ", https://en.wikipedia.org/w/index.php?title=Chevrolet_big-block_engine&oldid=1002891097, Short description is different from Wikidata, Articles needing additional references from July 2013, All articles needing additional references, Wikipedia articles needing clarification from October 2014, Articles with unsourced statements from October 2014, Articles with unsourced statements from December 2011, Articles with unsourced statements from January 2014, Creative Commons Attribution-ShareAlike License, 8.5:1, 9.0:1, 10.25:1, 11.0:1, 12.0:1, 12.5:1, 13.5:1, 4-barrel + solid-lifters, more aggressive cam and high flow cylinder heads. [26] The "Ram Jet 502",[27] the 496 hp (370 kW) / 565 lb⋅ft (766 N⋅m) crate motor, was offered with fuel injection, and came as a turn key setup which included all the wiring and electronics needed to operate in any vehicle. In 1971, the LS-5 produced 365 hp (272 kW) and 550 lb⋅ft (746 N⋅m), and the LS-6 option came in at 425 hp (317 kW) and 575 lb⋅ft (780 N⋅m). The spark plugs were inserted vertically into the quench area, which helped to produce a rapidly moving flame front for more complete combustion. Unfortunately, the raised deck design complicated the use of the block in racing applications, as standard intake manifolds required spacers for proper fit. A 375-horse version made it into a select few ’65 Chevelle’s (Z-16s), and by ’66 the SS396 package was a big seller in the Chevelle’s line. street-use, racing, etc.—are available in stock or modified configurations, as well as with increased deck height to allow for a longer stroke or more favorable rod length ratios, depending on intent, providing the ability to make engines with capacities of 632-cubic-inch (10.4 L),[33] 798-cubic-inch (13.1 L),[34] and as large as 1,005.8-cubic-inch (16.5 L).[35]. Mark IV engines saw extensive application in Chevrolet and GMC medium duty trucks, as well as in Blue Bird Corporation's All American and TC/2000 transit buses (the latter up until 1995, using a 427 with purpose-built carburetor). Please help before i purchase this Big Block. Add to cart. It gained its nickname due to the incredible speeds cars equipped with it attained during its debut being considerably faster than the well known W-series powered cars. In mid-1965, the Mark IV series was … Chevrolet designed this engine for use in passenger cars and light trucks. Filter Results Filter by Vehicle Individual Parts; Part Groups; Results 1 - 22 of 22 25 Records Per Page Default Sort . The highly successful and versatile 427 cu in (7.0 L) version of the Mark IV engine was introduced in 1966 as a production engine option for full-sized Chevrolets and Corvettes. Unfortunately, there is no evidence from GM that shows 57 cars were built. GM stopped installing Big Block V8s in the Silverado HD trucks when the GMT-800 series was discontinued in 2007. CHEVROLET Chevy big block Gen V Crate Engines. It had a dry weight of approximately 665 pounds (302 kg), depending on the type of intake manifold and carburetion systems present. The fuel-injection system for the Vortec 8100 is nearly identical to that used on Gen III engines, right down to the fuel and spark tables in the ECU.[31]. Many were shared with other divisions, but each design is most closely associated with its own division: GM later standardized on the later generations of the Chevrolet design: which dropped the total engine weight into small-block territory (approx. Also retained from the W-series design were the race-proven Moraine M400 aluminium bearings first used in the 409, as well as the highly efficient "side oiling" lubrication system, which assured maximum oil flow to the main and connecting rod bearings at all times. Bore and stroke was 4 1⁄8 in × 3 1⁄4 in (104.8 mm × 82.6 mm), resulting in a substantially oversquare design. Same as 396 cu in (6.5 L) L-34. 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. or Best Offer. available $8,350.00 1972 CHEVY BIG BLOCK ENGINE 402 SS CTB Camaro Chevelle Monte Carlo. The first series was the "W" series, which was used from 1958 until 1965. LS-3: produced 1970–2, 10.25:1 (1970) or 8.5:1 (1971) compression, hydraulic lifters, nodular iron crankshaft, and two-bolt main caps. If you have a V6 or non-chevy G-body, you will need to get the following (GM part numbers): Mounts-459021, Brackets (clamshells)-334970. The engine was first used in Mickey Thompson's Z-06 Corvettes at Daytona in the 1963 Daytona 250 Miles - American Challenge Cup,[7] then in Smokey Yunick's Chevrolet 1963 Daytona 500 record-setting stock cars. L-78: produced 1970. 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 430 hp (321 kW) and 575 lb⋅ft (780 N⋅m). Brand New. Chevrolet had introduced its popular small-block V8 in 1955, but needed something larger to power the medium-duty trucks and … With its relatively flat torque characteristics, the "W" engine was well-suited to propelling both the trucks and heavier cars that were in vogue in the US at the time. [clarification needed][citation needed]. It has been suggested that the LS6 was nominally substantially underrated, which was a common practice of American car makers; and that the engine actually produced well over 500 hp (373 kW) as delivered from the factory. 2020 Chevy Silverado HD 2500 Work Truck. Top Rated Seller Top Rated Seller. All engines can be custom painted to match your vehicle at your request. Introduced in 1996, it was produced for five years, until replaced by the Vortec 8100. For 1959 and 1960, high-output versions of the top two engines were produced with 320 hp (239 kW) and 335 hp (250 kW) respectively. Here are six examples of Detroit’s smallest big-block and biggest small-block engines. Casting : Year: CID: Main Caps: Comments: 340220: 1972-76: 427: 4-bolt: tall truck: 345014: 1974-86 Dart Big M Pro DRCE - BBC Motor Plate - Aluminum Engine Mount - Big Block Chevy. For 1970, the Big-Block was expanded again, to 454 cu in (7.4 L), with a bore x stroke of 4 1⁄4 in × 4 in (108.0 mm × 101.6 mm). Due to the relatively low mass of the valve train, mechanical lifter versions of the W-series engine were capable of operating at speeds well beyond 6000 RPM. It had a bore x stroke of 4.094 in × 3.760 in (104 mm × 95.5 mm),[10][11] and produced 375 bhp (380 PS; 280 kW) at 5600 rpm and 415 lb⋅ft (563 N⋅m) of torque at 3600 rpm. A product of growing power needs for the bigger, heavier GM production cars and trucks of the 1970's - GM had to come up with something as successful as their small block Chevy platform. L-35: produced 1965–9, had 10.25:1 compression, Q-jet carburetor, forged steel (1965-7) or nodular iron (1968-9) crankshaft, hydraulic lifters, oval port closed chamber heads, and two-bolt main caps. Many custom engine builders across the United States, as well as a large variety of aftermarket components manufactured for the Big Block family, make it possible to build a complete Big Block engine that contains no Chevrolet components. Beginning in 1969, the highest performance 427 models were fitted with the new open (vs. closed) chamber cylinder heads, along with design improvements in crankshafts, connecting rods, and pistons, adopted from the Can-Am development program. We are the only source for brand-new Chevrolet Performance Big-Block crate engines, built with brand … Will a GM tall big block from a truck fit in a GM car? The 454 big block is a true legend of an engine that has been the base for many of the fastest, highest HP builds in the history of hot rodding. [3] This was a special package created for drag racers, as well as NASCAR,[4] and it consisted of a 427 cu in (7.0 L) engine with aluminium body parts, and a cowl-induction air intake system. Thanks to the custom machining, hand-picked components, and dyno testing unique to Prestige Motorsports, you can expect … 1974 was the last year of the 454 in the Corvette, although the Chevelle offered it in the first half of the 1975 model year. With a four-barrel carburetor, the base Turbo-Thrust produced 250 hp (186 kW). When Chevrolet introduced the Mark I or W series big blocks engine in 1958, they were designed as a series of large displacement V8 engines needed for the post-World War II era’s heavier passenger cars. 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. Distributors with adjustable collars that allowed adjustments to the length of the distributor shaft also had to be used with 366 and 427 truck blocks. No satisfactory explanation was ever offered for why this change was made. The first series was the "W" series, which was used from 1958 until 1965. The big block drops right into the ’78 and up G-body’s. The last few letters of the code are the suffix code. 502 Chevy Big Block Buildup - Gen VI Gorilla Engine: Part 1 Motorhome Dodge 440 Basic Rebuild Gets Great Horsepower and Torque Factory LS Camshaft Comparison: LM7 … [25], The 366 cu in (6.0 L) truck engine also received the Mark V updates for 1991.[25]. Both the 366 and 427 commercial versions were built with a raised-deck, four-bolt main bearing cap cylinder to accommodate an extra oil control ring on the pistons. Transmissions. A sharp introduction in to the BRSCC Mazda MX5 Championship. The cylinder block, although more substantial in all respects, used the same cylinder bore pitch (bore spacing) of 4.84 in (123 mm) with a larger 2.75 in (70 mm) main bearing dimension, increased from the 2.5 in (63.5 mm) of the older engine (in fact, the shorter-stroke 348 and 409 crankshafts could be installed with the use of "spacer bearings" without modifying the crankshaft). W S p W o Y n s S o r e d A C E A 8 Z 8. We can outfit your engine with the … The Mark II Big Block The design work for an essentially new, second generation big block began in 1962, and by February of 1963, Chevrolet showed up to Daytona armed with fresh, 427 CID big block power. 540 Big Block Chevy Marine Engine Tyler Crockett Marine Engines might dabble in some monster truck and drag race engine building, but nearly 95 percent of the shop’s work is reserved for marine engines like this popular 540 cid big block Chevy built on a Dart block with a 4.250˝ crank in it. The Strongest and Most Reliable Big Block Available! Its design shared much with the L29 454, but with the addition of forged pistons and crankshaft, and coil near plug ignition. The 1973 LS-4 produced 275 hp (205 kW) and 468 lb⋅ft (635 N⋅m), with 5 hp (4 kW) and 10 lb⋅ft (14 N⋅m) gone the following year. Big Block Chevy - Complete Engines, Short Blocks and Long Blocks by Shafiroff Race Engines and Components. LS / LSX / LT. LS Series; LSX Series; Gen V LT; E-ROD Crate Engines; COPO engines; Small Block / Big Block. Find CHEVROLET 7.4L/454 Chevy big block Mark IV Motor Mounts and Inserts and get Free Shipping on Orders Over $99 at Summit Racing! Chevrolet had introduced its popular small block V8 in 1955, but needed something larger to power its medium duty trucks and the heavier cars that were on the drawing board. Chrysler 360 small block Mecum. This 7.4 liter engine is commonly known as the "454 Big Block". Jorg October 13, 2018. on PolyQuad – The future of 4 Valve Engines. Except for those older hot rodders among us, the big block Chevy has seemingly been around forever, and there is a reason for this now legendary engine’s long term success. Made in USA by the one of the best cylinder hone manufacturers, FLEX-HONE. Vortec 8100s were built at GM's Tonawanda Engine plant. Our most powerful Big-Block It is the king of all rat engines and is capable of pulling your bracket racer or heads-up challenger down the 1320 in the 9-second range. 454 Chevy Big Block V8 Engine Mounts and Adapters parts in-stock with same-day shipping. The Chevrolet "Big Block" is a term for a series of large displacement V8 engines that have been developed and produced in the United States from the 1950s until 2009. Available $8,350.00. In 1970 the 454 was first introduced for use in the Chevy Corvette, soon after it's use extended to a long list of GM and Chevy applications. Find great deals and sell your items for free. favorite this post Feb 4 Like the L88, the ZL1 required 103 octane (RON) (minimum) fuel, used an unshrouded radiator, and had poor low speed idle qualities - all of which made the two engines largely unsuitable for street use. The body of a Chevy is easily identifiable by shape, size and select characteristics. 19331585 Identifying a Chevy big block engine based solely on the serial number is a straightforward task once the serial number is located and then deciphered. The push rods also acted as conduits for oil flow to the valve gear. Development began with a 409 cu in (6.7 L) version (Mark II) and ended with a 396 cu in (6.5 L) variant; however only the 427 cu in (7.0 L) engine (Mark IIS) was ever raced. L88 was rated for 430 hp (321 kW) at 5200 rpm. Super Stock and Drag Racing Magazine recorded an 11.62 second/122.15 mph (196.58 km/h) 1⁄4 mile (402 m) in a ZL1 Camaro that was professionally tuned and driven by drag racing legend Dick Harrell, although that car was also equipped with open long-tube S&S equal-length headers, drag slicks, and minor suspension modifications. The first few letters and numbers identify the plant it was manufactured in, followed by the month and day for example: S0924--S stands for Saginaw, 0924 is the 24th of September. The Vortec 8100 L18 is a big-block V8 engine primarily used as a truck engine. From United States. 16 watching. Watch; Tell us what you think - opens in new window or tab. Period magazine tests of the ZL1 were quite rare due to the rarity of the engine itself. Later blocks intended for performance use had the main oil gallery moved up to the cam bearing bore area and provided "priority main" oiling, improving the oil system even further. The 502—with a 501.28 cu in (8.2 L) total displacement—had a bore and stroke of 4.466 in × 4 in (113.4 mm × 101.6 mm) and a cast iron 4-bolt main block. The 454 EFI version was rated from 230 hp (172 kW) to 255 hp (190 kW) and from 385 lb⋅ft (522 N⋅m) to 405 lb⋅ft (549 N⋅m) of torque. Closed-chamber cylinder heads have small combustion chamber volumes for high compression ratios, with even mildly domed pistons. General Motors introduced EFI in 1987, which was found on GM C1500 SS, C/K2500 and C/K3500 trucks. favorite this post Feb 23 Chevy Big Block Porcelain Exhaust Manifolds $150 (Hanover Ma) pic hide this posting restore restore this posting. Consequently, the engines offered very similar performance and resulted in a car whose performance was described by one automotive journalist as "the ultimate in sheer neck-snapping overkill". Exhaust Headers (Huggers) for a Chevy Big Block 454 Motor $100 (isp > East Northport) pic hide this posting restore restore this posting. These oversized crate engines provide an excellent platform for power adders, delivering impressive performance specs and deep, ground-pounding sound. $150. The Chevy V8 is sometimes called the "Rat" motor, a take-off from the popular term "Mouse" motor, given to the Small Block by its enthusiasts. Both engines used the same high-lift, long-duration, high-overlap camshaft and large-port, cast-iron heads to maximize cylinder head airflow (and, hence, engine power) at elevated engine-operating speeds. L-34: produced 1970. Our 454 Big Block Chevy crate engines run from 489 to 632+ cubic inches and are based on the legendary 454 Big Block Chevy! The Workhorse W-20 is a clone of the P12 Chassis. Bore x stroke were both up from the 348 cu in (5.7 L) to 4.31 in × 3 1⁄2 in (109.5 mm × 88.9 mm). What eventually became the MKIV first appeared as the Mystery Engine at the 1963 Daytona 500. As the piston approached top dead center, the angle of the crown combined with that of the head deck to form a wedge-shaped combustion chamber with a pronounced quench area. ~Read me pleeeze~ For up-front payment total on a remanufactured long block exchange engine, add the 3 figures at the right end of the table rows above. It was also used in marine applications. The theory behind this sort of arrangement is that maximum brake mean effective pressure (BMEP) is developed at relatively low engine speeds, resulting in an engine with a broad torque curve. pic hide this posting restore restore this posting. This large difference in power suggests that the OEM exhaust manifolds and exhaust system were highly restrictive in the ZL1 application, as was also the case with the similar L88. This too helped high RPM performance. The valves continued to use the displaced arrangement of the W-series engine, but were also inclined so that they would open a… The 366 cu in (6.0 L) Big Block V-8 gasoline engine was used only in Chevrolet medium duty trucks and in school buses. bbc chevy 496-505 engine, dart big m block, crate motor 674 hp base engine. One minor difference between the 348 and 409/427 was the location of the engine oil dipstick: it was on the driver's side on the former and the passenger's side on the latter. $20.00. 1 product rating - 31121 Engine Replacement Clamshell Motor Mount Insert GM Chevy GMC Big Block. The same engine was upped to 380 hp (283 kW) in 1962. The W-series was a physically massive engine when compared to the "Small Block" Chevrolet engine. Other important differences between the Vortec 8100 and older Big Blocks include a changed firing order (1-8-7-2-6-5-4-3), a new 18-bolt head bolt pattern, longer connecting rods, different symmetrical intake ports, different oil pan rails and the use of metric threads throughout the engine. Pace Performance - BBC Crate & Long Block Engines Whether you are looking for a base Big Block Crate Engine or want a dressed up version, you've come to the right place. Find CHEVROLET 7.4L/454 Chevy big block Gen V Engines & Components and get Free Shipping on Orders Over $99 at Summit Racing! Lewis specializes in gardening articles, publishing frequently on a variety of websites. Engines with displacements between 6.0–6.6 L (366–403 cu in) have been classified as both small-block and big-block, depending on the particular manufacturer's range of engines. The L21 was paired with the early 4 speed Allison automatic transmission or manual transmission, depending on the application. Using Patrick Hale's Power/Speed formula, the 122.15 mph (196.58 km/h) trap speed indicated low 11-second ET (elapsed time) potential (e.g. New Articles. With stock exhaust manifolds and operation in the 6,800 rpm range, it was generally accepted that the engine was capable of producing in excess of 500 hp (373 kW) gross with free-flowing (open) long tube headers. In ’69, big-block frame brackets were redesigned to use a new-for-the-time thicker and narrower engine mount, which was also used on 302ci and 350ci engines. [18] A second engine dyno test conducted on a second production line stock (but recently rebuilt and partially blueprinted) ZL1 revealed nearly identical figures for the various "gross" conditions.[19]. Our Chevy 454 Long Block Engine is on sale. This is a stock balancer for an externally-balanced 454 big-block. Small Block Chevy 4.155 Bore X 4.00 Stroke Here you go Small Block Chevy Racing Engines fans! 1967 1968 1969 Camaro Frame Motor Engine Mount Big Block Chevy Right BBC 396 427. As American automobiles grew in size and weight following the Second World War, the engines powering them had to keep pace. Chevrolet had introduced its popular small-block V8 in 1955, but needed something larger to power the medium-duty trucks and … It was a redesigned Chevrolet Big-Block engine and was introduced with the 2001 full-size pickup trucks. Big Block Chevy Cylinder Heads Open vs. Closed Chamber - A good way to describe big-block heads is to categorize them as open or closed chamber. The 348 and 409 are exclusive to the "W" series, but the 427 is a crossover used in both series. Mechanical lifters and triple two-barrel carburetors brought the "Special Super Turbo-Thrust" up to 315 hp (235 kW). L71 + aluminium heads; RPO L89 also applied to L78 "375 HP" 396 engine with aluminium head option. Good news is, you will use the stock small block mounts and brackets (clamshells). Chevy Big Block and Stroker Engine Choices Chevy Big Block & Stroker Engines. All engines are coded with a prefix and a suffix that identify the motor. $500.00. New report at GM Authority suggests that General Motors is working on a bigger displacement gas engine. The Chevrolet Big Block is one of the most familiar and long-running Big Block engines. Displacing 396 cubic inches, the solid lifter L78 produced a whopping 425 horsepower when it was first introduced in Corvette for only 1965. 2005-2007 NISSAN MURANO 3.5L ENGINE COOLANT PIPE OEM. From 1991 the 454 was updated to the new Gen V block, crankshaft and heads. Power output ranged from 340 to 550 hp (254 to 410 kW). For example: a code of QB is a 1962 Impala, CID:409, HP:409, four-speed transmission and 587 dual quad. There were smooth running versions with hydraulic lifters suitable for powering the family station wagon, as well as rough-idling, high-revving solid lifter models usually applied to a minimally equipped, plain-looking, two-door Biscayne sedan fitted with the 425 hp (317 kW) version of the 427 - (RPO L72). Learn how and when to remove this template message, "HowStuffWorks "Chevy 409-cid V-8 Engine Overview, "1963 Chevrolet Impala Sport Coupe 409 V-8 Turbo-fire 425-HP 4-speed close", "GM U.S. Facilities - Flint Metal Center - Plant Summary", "Mickey Thompson Z06 Mystery Motor Stingray", "Did Chevy consider Packard V8 BB Design? 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. 348 cu in (5.7 L), available from 1958 to 1961 in cars, and in light trucks through 1964; 409 cu in (6.7 L), available from 1961 to 1965; and. Mark IV engines also found themselves widely used in power boats. The tall block allows for extra stroke in the form of a 4.75-inch forged crank, and when combined with a huge-for-big-block-Chevy 4.600-inch bore, it produces the magical 632ci. Indeed, Super Chevy Magazine conducted a chassis dyno test of a well-documented, well tuned, but stock 1970 LS-6 Chevelle and recorded 283 peak HP at the wheels[17] – a figure that lines up quite well with the previously referenced 350 SAE Net HP figure. 540 Big Block Chevy Blower Engine 800-1200 Horsepower Can be configured from mild pump gas street to aggressive race gas $16,995 This engine starts with a World Merlin 4 block that we fully cnc machine and fill with the following components Eagle 4340 forged crank 4.25″ stroke Eagle forged H beam rods 6.385″ JE forged […] $10.99. favorite this post Feb 14 Wanted big block Chevy valve covers $1 (isp > Freeport) hide this posting restore restore this posting. GM offered it in their Performance Parts catalog, available as multiple crate motors with horsepower ratings from 338 to 600 hp (252 to 447 kW) and torque of 470 to 567 lb⋅ft (637 to 769 N⋅m) in "Base" and "Deluxe" packages. Cars such as the Chevy Impala SS, Camaro and Nova all have distinct looks, but the big block engine set these cars apart from the rest of the cars of the day. Like its predecessor, the Mark IV used crowned pistons, which were castings for conventional models and impact extruded (forged), solid skirt types in high performance applications. 41 watching. Perhaps the ultimate 427 for street applications was the 435 bhp (441 PS; 324 kW) at 5800 rpm and 460 lb⋅ft (624 N⋅m) at 4000 rpm of torque L71 version available in 1967 to 1969 Corvettes, and in the Italian Iso Grifo. The Chevy V8 is sometimes called the "Rat" motor, a take-off from the popular term "Mouse" motor, given to the Small Block by its enthusiasts. However, it did provide a fairly reliable way to differentiate between the smaller and larger versions of the engine. The history of Chevy big block engines. Stock big-block Chevy oil pumps have been available in two configurations: standard volume or high volume. Big Block Manual Connect & Cruise; Crate Engines. 350 B-Series. on GM’s 572 Big Block Chevy Muscle Motor. The 454 HO big block is Chevy Performance's most economical alternative crate engine to rebuilding - see images, dyno specs, installation info and more. The big-block Chevy goes by many names – the Rat, the Porcupine, and if you go back far enough, the semi-hemi. The engine block is a GM DRCE (Drag Race Competition Engine) iron block with compacted graphite and 4.900-inch bore spacing (stock is 4.840 inches); the roller camshaft is a custom nine-bearing billet with more than 1 inch of lift at the titanium valves, pushing on oversized keyway-guided roller lifters. Shop 454 Chevy Big Block V8 Engine Mounts and Adapters parts and get Free Shipping on orders over $99 at Speedway Motors, the Racing and Rodding Specialists. In addition to the 427, a 366 cu in (6.0 L) version was produced for the commercial market. This is a 620 hp (462 kW) and 650 lb⋅ft (881 N⋅m) version, designated ZZ572/620 Deluxe, capable of running on 92 octane pump gasoline for street applications. This "secret" engine was a unique design incorporating aspects of both the W-series and the mid-1965 introduced Mark IV [6] referred to in sales literature as the "Turbo-Jet V8". 1966: 325 hp (242 kW)/360 hp (268 kW)/375 hp (280 kW), 1967: 325 hp (242 kW)/350 hp (261 kW)/375 hp (280 kW), 1968: 325 hp (242 kW)/350 hp (261 kW)/375 hp (280 kW), 1969: 265 hp (198 kW)(2bbl)/325 hp (242 kW)/350 hp (261 kW)/375 hp (280 kW), 1971: 300 hp (224 kW) SAE gross; while SAE net was 260 hp (194 kW) for dual exhaust and 206 hp (154 kW) for single exhaust, 1972: 240 hp (179 kW) SAE net for dual exhaust and 210 hp (157 kW) SAE net for single exhaust, L-34: produced 1966–9, 10.25:1 compression, Holley (. 454 Chevy Big Block V8. While the small-block Chevy has been overshadowed now by the LS family, the big-block Chevy is still the best approach for building a big cubic inch GM engine for the street. This resulted in superior vehicle weight distribution for improved handling, although the difference in straight line performance was negligible. Oil Pumps. The initial version of the engine produced 360 hp (268 kW) with a single 4-barrel Carter AFB carburetor. These crate engines are high-performance drop-in engines offering substantially more horsepower than the factory original. Wheel horsepower (which is obtained at the drive wheels and thus takes into account drivetrain power loss) does not equate to SAE net HP (which is horsepower at the flywheel, like SAE gross, but with all accessories included, unlike SAE gross).[17]. In all forms (except the ZL-1 Can-Am model), the "rat motor", as it was later nicknamed (small-block engine being a "mouse motor"), was slightly heavier than the W-series model, with a dry weight of about 685 lb (311 kg). [29] Another version of the same engine is available as a high compression variant, codenamed ZZ572/720R Deluxe, generating a minimum of 720 hp (537 kW) on high-octane, i.e., race-gas.[30]. or Best Offer. Identifying a Chevy Big Block engine is simple once the codes are located on the engine and identifiers are translated. The LS-7 was later offered as a crate engine from Chevrolet Performance with an officially rated power minimum of 500 hp (373 kW) Gross. [5] Unlike the later, second-generation 427, it was based on the W-series 409 engine, but with a longer 3.65 in (92.7 mm) stroke. Product Information. Shop 454 Chevy Big Block V8 Engine Mounts and Adapters parts and get Free Shipping on orders over $99 at Speedway Motors, the Racing and Rodding Specialists. All Big Blocks are stamped there. 555 ProCharger; 583ci Pump Gas Series; 583ci Super Series-12º A 409 hp (305 kW) version of this engine was also available, developing 1 hp per cubic inch with a dual four-barrel aluminium intake manifold and two Carter AFB carburetors. This engine was identical to the 425 hp (317 kW) L72 427 (first introduced in 1966), but was fitted with 3X2-barrel Holley carburetors,[14] known as "Tri-Power", in lieu of the L72's single 4-barrel carburetor.