Comp Cams recommendation evaluation

with the last cam recommendation they have bumped you up 3 steps from the first one which is good for all the other parts your using. The problem might be your compression ratio. I don't know what a 89 was. If it is too low when you use a big cam it bleeds off with the long duration and overlap and kills the power on bottom end. that cam wants 9.5. With the Rhoads it will help that because they make the cam smaller at lower rpm. They also take away some of that killer sound your after.

I raced a buddy with a 74 360 challenger with my 318 back in the day. He had a big 284/484 purple cam in his 8.5 to 1. With identical gears my 318 would pull 4 lengths on him off the hit until he got his rolling.