[andy669]

For maximum compression its better to run the pistons .005~.007 in the hole and select a small bore head gasket thats .030 thick. Or with an iron head you can have the pistons .020 in the hole and use a .015 steel shim gasket. Zero decking with a .037 gasket can give up a little because the bore size of the gasket is always bigger than the piston. But to do this accurately you need to have the block deck trued. This brings the deck perfectly parrallel with the mains, and makes sure both decks are set at 45 degrees. I have seen them be out as much as .020 from front to back and top to bottom.

Andy