My 383 is weak!?

383 is awesome. Get rid of that wet noodle cam and it'll wake up. The 452 heads are good factory heads with hardened seat's,only thing better is aftermarket.They will support 500 h.p no problem,with some basic porting.

There were a lot of 396 chevelle owners who had thier pride wounded by a 383 road runner back when the cars were new!