Just a quick question...what is the driving force behind the 383? Why not just use a 400? I've heard the saying, "there is no replacement for displacement". I have a 400 sitting on my stand, and I am looking fwd to throwing that baby in my 84 4x4.
Its cool that you wanna stroke that motor, but either way you are looking at balance and clearance. Why not just keep the large 4.125 bores of the 400? Good luck man!
Wes