Quote:
Originally Posted by Excaliber
I have always been of the opinion that a 427W is over stressed the minute it's put together. Oh sure it is common number, just not one I would ever personally go for. Just to much bore and stroke in that tiny block for my liking.
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Nothing wrong with the bore/stroke combination (4.125 x 4.0)... happens to be the same as the new LS-7 in the Z06 Vettes.
Quote:
Originally Posted by olddog
If you start with an aftermarket block at 4.125 bore and only go 4.0 on the stroke, I think you should be fine. Same stroke as a 408 with a 4" overbore.
The dirt track boys are running 430 inch SB chevy's with a shorter deck than a Windsor. They are running them hard and turning them up 7K and more.
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Dodge, Chevy, and Ford, dirt track boys (and offroad truck boys) run 430" engines. We run a 9.5" deck block machined to 9.3" with the 430" Chevy and turn 8000 rpms in qualifying. They don't stop there... 447" and 461" in a 9.5" block @ 850+ hp is the norm.