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79TransAm
10-19-2005, 06:39 PM
I have a couple different questions, im trying to figure stuff out. What would be the approx. cr of a 455ci with 114cc heads and flat top pistons. How much would the cr raise if I stroked it out to 474ci with same heads? I think it would be bad ass to have a blown 474 stroker, but i wanna be able to run pump gas(i will probably only boost it like 6psi). any ideas ponti-action racing makes a 474ci stroker kit for like $2k. anyone know if its forged, doesnt say on the site, but for $2k im assuming not. But it should hold up to only 6psi.

ProStreet R/T
10-19-2005, 07:19 PM
What thickness head gasket?
Are the pistons/block set to 0 deck height?
Any valve reliefs?
staying at 4.152 bore or going over?

Sounds like you will be 8.6ish at the standard stroke and 9.0 with the stroker.