Diodedog
Well-Known Member
I built plenty of .070" 383s for budget customers using standard 72 style 440 pistons, never a problem with the blocks, I shim the boring bar if the wear is a bit high in one corner. The pistons are about 30 grams heavier and if you're on a low budget the pins can be shortened by grinding them down on a basic bench grinder to remove the 30 grams or an aftermarket pin used, I think Trend make a set about 190 grams for a decent price, the stock ones are about 225 grams.