[Curt C.]

I assume you are talking rear wheel numbers? My 351W (standard bore & stroke) made 377 RWHP and 355 RWTQ which equates to 450 flywheel hp assuming a 15% driveline loss. Utilizing ARF 185 heads (2.02 vlave) and a hydraulic flat tappet cam with 236/246 duration and 520/538 lift. Suffice it to say, there is a lot more power available in your motor. Cam specs would help us better evaluate your situation. Of course, there is always a compromise to be made with respect to streetability vs. power. How fast do you want to go? Or, do you just want a 408? This stuff is so much fun!