Quote:

with good quench we could run a CR in the mid 10's on pump gas, no way that high without it. This fantasy buildup is a 440 block, 4.250" 440 source crank, 7.1" chevy rods & some eGay 403 olds cast pistons for just over $100. Problem is the non machined ring around the dish is only .445 wide but with a CH of 1.595, bore of 4.351"(std) it'd work ex for the not enough quench area. Might have to just spend the extra & get it right.



Why would you use the olds piston when Brandon sells the dished quench piston for that combo?? With 84cc heads & the 17cc dish pistone, deck height set at 10.720 & a .039 gasket you get 10.35 C/R...Why fight it?

Edit recalculated with 81cc head (typical 915) & 10.725 deck height (.044 quench) 10.51 C/R