Jon i think you re-think that , go all aluminum 482 -500 inch , forged internals and go for 600-650 on motor and give it some spray , say 250 shot of squeeze and have 800 plus on tap when you want it . or feed it some boost .... build a turbo d fe . There is a guy here with an 1100 hp supercharged 502 chevy , he was running his mouth bout fords being slow , and a 393 inch windsor with turbo left him like he was on the brakes in a match race . I loved it , was fun to watch . My long term goal a force feed all aluminum 482 -500 inch its very doable .. Bud