decking a 383 block
I took .060 off of my trickflows to go from 11.6 to 12.8, that was a lot of time 78 CC's to 65 CC's .
My block was decked true and my flat top pistons ended up .011 out of the deck.
On a stock stroke 383 there's a few pistons that will get you close to top dead center.
Deck it square.
Street car, race car, in between? That will steer you where you want.