According to the wallace calculator my old budget bracket engine made 530. 440,home ported 915s with big valves, excelorator intake, 850dp, 6-pack pistons, comp. cams 306 .555 solid cam and 1 7/8 headers. Very easy to make 500 hp. I know my heads didnt flow as well as any of the heads listed. Lots of similar combo's at the track.
