Well I could measure the piston but my block has been decked so it won't tell us much.
Assuming factory deck is 9.150 the CH should be 9.15-5.7-3.53/2 or 1.685 for zero deck. Less .015 to account for machining the deck surface gives a CH of 1.670.
If you have a virgin deck and don't want to machine it, the .015 in the hole plus .020 steel shim head gasket will give the same result as zero deck and a .035-.040 composite head gasket.
Last edited by strokersix; 05/30/09 06:59 PM.
