The engine is zero deck, We were checking with out rings on the piston, gasket is a .040" cometic, lash is .020"/.022" and we are using light spring. I am not using putty to check either, I am using a dial micrometer.
I would check with rings, use a .048 gasket, .025 lash, and check with actual springs. You'll have enough P/V clearance like that. You don't need a tight quench with race gas and 13:1.
Brian
