700HP 383 Buildup

Well, not to be a party pooper, but a 383 will need some serious boost to get to that level, and it would need to be turbos. The block should hold together, but the stress a blower making that kind of boost puts on the crank snout might cause problems. The crank, rods, and pistons need to be changed, and not to SCAT cheapies. a good set of rods, a good (callies, not stock or 440source.com) 3.75" (440) stroke crank, and a custom set of boost psitons, plus a set of Edelbrocks would do it. I'd use 2 med size turbos, and plan on making serious boost (Like 15-20psi) preferably with an intercooler. You'll be close or over the 700 level. The block will need some upgrading too. I wouldnt bother. Nobody needs 700 hp unless its a drag racing for money situation.