well so much for putting the car on the Dyno CorvetteForum
is there a visual difference between a chevrolet 427 and a 454? unfortunately, according to Mortec, the block casting number "3963512" can be either a 427 or a 454. i want to make sure what this engine is before i buy it. i haven't got any head numbers yet. webbing in the block? thanks for your help, steve bava17, May 4, 2007 SHARE POST #1 Aman
427454 Big Block Chevy Tall Deck for Sale in Philadelphia, PA
427 vs 454, what are the dis/advantages? Sorry, I know this was a recent thread, but I couldnt find it in the search. I have always had small blocks, and still do, currently, but I know someone offering a good deal on a 454 big block, very nice.
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The stroke is different between the 454 and 427.454=4.00, 427=3.76 Bore is the same @4.251. (396 bore is 4.094)You could use a 396 crank in a 454 block to create 427,they use the same rods but the 454 pistons won't work due to different position of the piston pin. Hope this helps.-----Jeff ACES#841 TCG#158 68 SS396(454) 68 L78 Project.
Building a Pro Touring '69 Camaro with a 540 BBC!
427ci: The rare RPO Z11 427ci is a version of the 409, with the stroke increased by 0.150 inch. It features larger main bearings and domed pistons and was available from 1962 to1963. Mark IV "Rat.
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1 2 B bracketchev1221 1864 posts · Joined 2008 #2 · Nov 5, 2013 The block doesn't know what engine it is. Other than casting number as to what it WAS, its a 4.25" bore block. The line of "its a 427 crank in a 454 block", or the other way around means nothing. If it is a 427 crank, its a 427. If its a 454 crank its a 454.
Between the 427 S/C and 289 slab side, both should… Rare Car Network
#1 · Dec 12, 2004 I have always had small blocks, and still do, currently, but I know someone offering a good deal on a 454 big block, very nice. I know that the original engine available in my 68 was a 427, and they seem to be very much more sought after than 454's, but is there any disadvantages to the 454?
Between the 427 S/C and 289 slab side, both should… Rare Car Network
L88 427 vs, LS5,LS6 or LS7 454 Mark IV 2piece Main Seal Other than the clear cubic inch difference is there an advantage of shorter stroke to wind up faster? Remember all the mouse talk about 327's and 350's in corvettes. Sure If you ask whether you want a cast crank or a forged crank, forged.
The 427 BigBlock Comparing L88, ZL1, ZZ427 Engines
427 cu in (7.0 L), available in 1962 and 1963. The W-series engine was made of cast iron. The engine block had 4.84-inch (123 mm) 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.
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454 vs. 427 main differences? Which way to go? Jump to Latest Follow 26K views 29 replies 17 participants last post by ironhead Apr 13, 2008 K kall64 Discussion starter 23 posts · Joined 2008 #1 · Feb 1, 2008 I have a bare 73 454 block and I'm trying to decide which way to go with it,454 or 427.
Between the 427 S/C and 289 slab side, both should… Rare Car Network
#1 · Mar 6, 2010 For the last couple months I have been considering a 454 for my camaro. I was talking to a guy about it and he suggested putting 427 crank and pistons in it, which he said would make it much snappier than the 454. Is this true, would it be worth the loss of 17 ci?
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Brandan Gillogly 27 April 2021 Share Chevrolet Chevrolet's 427 cubic-inch big-block didn't last long, but it made an indelible mark in the performance world. The Mark IV big-block 427, available only from 1966-69, is the one that muscle car fans perhaps most revere.
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The 396 has the smallest bore of 4.09" and a 3.76" crank. The 402 (not the 400 SBC) was a factory over bored 396. The 427 increased the bore to 4.25" and still had the 3.76" crank. The 454 used the same bore as a 427 with a stroke increase to 4.00". For higher RPM use a 427.
427 vs 454 CorvetteForum Chevrolet Corvette Forum Discussion
For 1970, the 454 replaced the 427 as Chevrolet's premier big-block, putting an end to the period recognized by the mighty 427's dominance.. 06 Early 427 engines featured compact closed chamber.
Between the 427 S/C and 289 slab side, both should… Rare Car Network
1727 posts · Joined 2016. #5 · Mar 20, 2020. If it was me I would stick in the lower 400 inch range. 454 is great for bragging numbers at a car show but it takes a lot of cylinder head to efficiently make it run. If you think about a big block Chevy, a 427 or 454 with oval port heads had a 265 cc intake runner.
2017 Muscle Car MatchUps (Engine Edition) Round 2 Pairings Unveiled
The high-horsepower version of the first-year 427 was the L72, featuring a beefy block with four-bolt mains, a forged steel crank and rods, forged aluminum 11:1 pistons, a high-performance solid-lifter cam, and huge rectangular-port iron heads fed by a Holley four-barrel carb mounted on a high-rise aluminum intake manifold.
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427 vs 454 My 50th Anniversary Corvette book, (published in 2003 by the Auto Editors of Consumer Guide) says that both the 427 and the 1970 454 have the same bore and stroke, 4.25 x 3.76. It lists the 1971 and later 454 at 4.25 x 4.00. Is this a typo? If not, how could two engines with the same bore and stroke have different displacements?