4.5"Stroke crank in stock 454 block
#11
You can take a stock block more than .030. I've had two that were .100 over with no problems. You can go as much as .125 over but i would get it sonic tested first. A .100 over with a 4.25 stroke is a 505 a .125 over with a 4.25 stroke is 511. Just some ideas.
#12
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Originally Posted by BEAST477
You can take a stock block more than .030. I've had two that were .100 over with no problems. You can go as much as .125 over but i would get it sonic tested first. A .100 over with a 4.25 stroke is a 505 a .125 over with a 4.25 stroke is 511. Just some ideas.
#13
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I was trying to think outside the box. If a person wanted to use the stock block,and money and time invested in clearancing weren't an issue, what kind of crazy sh#t could a person accomplish. How about a 4.375" I've always heard only 4.250" also, but I wanted to see if anyone has pushed the envelope.
#14
talking about stock appearance Big Cube engines...how about a small block appearance with close to 500ci........
Now if ya got the money and ya wanting to play some mind games..go this route...i will argue with you all day long is a 355ci.... 8)
i ran a .125 454 block with 4.25 stroke..ran like a scalded dog..it was not hardblocked and i had zero Problems..i broke a lifter to end this engines life.
i personally would keep it at .100 over with a 4.25 stroke
Now if ya got the money and ya wanting to play some mind games..go this route...i will argue with you all day long is a 355ci.... 8)
i ran a .125 454 block with 4.25 stroke..ran like a scalded dog..it was not hardblocked and i had zero Problems..i broke a lifter to end this engines life.
i personally would keep it at .100 over with a 4.25 stroke
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#16
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Join Date: Jun 2003
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Originally Posted by blacksleeper
I was trying to think outside the box. If a person wanted to use the stock block,and money and time invested in clearancing weren't an issue, what kind of crazy sh#t could a person accomplish. How about a 4.375" I've always heard only 4.250" also, but I wanted to see if anyone has pushed the envelope.
#17
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JOURNEYMAN
Join Date: Oct 2006
Location: florida
Posts: 28
4.5 crank
Yes you can fit a 4.5 stroke in a stock 454 block . I have done it wit an eagle crank , eaggle h-beam rods and cutom J&E pistons . It was not easy . I had to machine to O.D. of the counter weights off the crankshaft which required a lot of extra work on the balancer and plenty of heavy metal . The pistons have a 1.145 compression height . The end result was a 518 cubic inch BBC for a motorhome . Massive torque output . i am now putting that same engine on an airboat .