Cr?
02-26-2008, 08:05 PM
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Cr? ok i am needing to figure what my CR is going to be. iam running a forged rods and pistons 347 w/ Weisco -4cc Valve releifs and 59cc PRC 2.5 5.3's with .0040 cometic head gaskets. thanks 
02-26-2008, 09:15 PM
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I think the closest Wiseco makes off the shelf is -3.2cc... In which case, ASSUMING you still have the factory bore, use the 3.910 cometic AND have an ACTUAL deck height of 9.240 and use 6.125 rods... You'd be at 11.13:1... If you have the shorter rods, use a larger diameter headgasket, etc... The comp ratio will go down.
Last edited by crashinaz; 02-26-2008 at 09:21 PM.