1971 Chevrolet Chevelle SS 454 VIN 136371L109174
With over 50 years of history to unpack, the Chevy 454 7.4L V8 is an exciting engine that also offers tons of potential. In this guide, we discuss Chevy 454 engine specs, performance, reliability, upgrades, and more. *Our primary focus in this article is the original 454 big block engine from 1970-1976.
BBC 454 Gen 5 Bare Engine Block Casting Number 10114182 4 Bolt Main eBay
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He hot rodded this 454 cid Gen V big block Chevy to the tune of 1,800 horsepower. Find out what went into the build! By Greg Jones Mar 10, 2020 Engine of the Week is presented by Growing up in California and Nevada, Joshua Gomez was surrounded by hot rodding since birth.
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Gen V and Gen VI heads have different water jacket passages than Mark IV heads, and do not work on Mark IV blocks. (Photo Courtesy GMPP) All production big-block heads have stamped steel pushrod guideplates under the rocker arm studs for either 5/16-, 3/8-, or 7/16-inch pushrods, but Gen V/ VI heads switched to a non-adjustable valvetrain.
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Cast Iron Block: The Gen 5 454 utilized a cast iron block, which provides durability and reliability, making it suitable for heavy-duty applications. Pros Well-established and reliable engine design. Availability of aftermarket parts and support. Good torque output for towing and hauling applications. Cons Lower horsepower compared to Gen 6.
BBC 454 Gen 5 Bare Engine Block Casting Number 10114182 4 Bolt Main eBay
Gen 6 block is a good foundation. All accessaries from gen 4 will fit it, other than no mecahnical fuel pump. As mentioned gen 5 and 6 are internally balanced and 4 is externally balanced. Make sure you get balancer and flywheel with it. A quick way to tell the difference from 5 and 6 is the timing cover. Gen 6 uses a 6 bolt aluminum cover.
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Motors, like music, were much simpler in the '60s. When Chevrolet unveiled the big-block V-8 back in 1965, the only decision in a record store was whether to buy the single or the entire album on.
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History. The big block, which debuted in 1958 at 348 cid (5.7 L), was built in standard displacements up to 494 cid (8.1 L), with aftermarket engines exceeding 500 cid (8.2 L). Chevy's Gen VI, Vortec 7400 L29 7.4 L (454 cid) V8 was a truck version of the engine. Introduced in 1996, it was produced for five years, until replaced by the Vortec.
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#2 · May 7, 2000 I'm certainly NOT an expert, but my understanding (from reading the GMPP catalog) is that the Mark IV is the first generation PRODUCTION Chevy big-block, and that it was succeeded by the Generation V and then the Generation VI versions.
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Braden Carlson Jun 10, 2021 The Chevy 454 cubic-inch big-block engine was a staple of the GM lineup for over 25 years. Could it be what you're looking for? The Chevy big-block engine started life as an evolution of the iconic automaker's muscle car lineup to expand its horizons into bigger engines with more power.
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The Chevrolet "big block" engine is a term for a series of large-displacement, naturally-aspirated, 90°, overhead valve, gasoline -powered, V8 engines; that were developed and produced by the Chevrolet Division of General Motors, from the 1950s until present.
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Even with Gen V/VI revisions, the 454's displacement remained constant for decades until GM radically changed the big-block, pushing a production heavy-duty truck engine up to 8.1 liters (496ci) that appeared in 2001. The bore remained at 4.250 but the stroke increased from 4.00- to a hefty 4.37-inches. Unfortunately for interchange artists.
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Jeff Smith: There appears to be a very slight difference between the forged steel cranks used in Chevrolet Performance's Gen VI ZZ454 and 502HO engines and the cast crankshafts used in regular production replacement 454 Gen V and VI engines. The difference is 0.8 of an inch/ounce external weight. This represents less than 2 percent.
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Tim King December 14, 2021 big block, differences, gen 3, gen 4, gen 5, gen 6, iv, v, vi Difference in Big Block Gen 4, 5, and 6 Engines What exactly are the differences between the generations of big blocks? The big block Chevy engine, AKA BBC, AKA Rat Motor, has been in production since 1965.
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Beth is correct,you have a Gen 6. A Gen V timing cover looks like the old Mark IV except where it seals to the pan. And the big visual is a Gen V does not have a provision for a mechanical fuel pump. My 1970 SS454 LS6 SuperCar certified stock appearing 11.90@113 MPH. My 1964 Big Block Corvette Gasser.
