A standard bore 72 and later 440 piston will give you a 1.93" compression height, same as 68 383 but it will be .070" over, I machined and built a lot of them and have another I'll be doing soon which will be for sale.
Do you machine the block for zero deck.
the low compression 440 piston will set at .008 or so bellow deck in a factory block
Doesn't take much to get it above deck for more compression
