700HP 383 Buildup
Nathan just to show you what you're up against trying to make 700 hp with a naturally aspirated 383 on pump gas.This article has three of the top engine builders in the world building a Chevrolet 454....Ford 460....and a Mopar 440 to run on pump gas and neither engine quite achieved 700 hp.The 440 did win out over the other two though.hehe
http://popularhotrodding.com/enginemasters/0110_phr_bb/