383 Build

The closest you will come to zero deck pistons is around .014 in the hole which can be easily taken to zero deck, BUT most flattop pistons for 383's do not have valve reliefs. If you zero deck a 284-.484 might not even fit. Find a piston with valve reliefs. try KB. The motor presently in my duster has pistons .014 in the hole, a .020 steel shim head gasket, and uncut iron heads and the compression works out to 9.2:1. A good pump gas ratio with a small cam.