Bob the cam is suppost to be good to 3200 to 6400 RPM dont think going I'm to spin them any harder then 6k, got your stud griddles on for AFR heads, nice pieces but need new valve covers now for clearance, one change always leads to another thing you have to deal with...

Thanks everyone for your insight and thoughts. I think after looking at the 315 competition series I'm pretty sold. Spendy, But worth the extra 600 bucks. They seem to out flow the 225's and will provide better low end torque numbers. So ill be ordering them in couple weeks!

So I'm ordering my AFR 315 comp. Heads this week. Getting pretty excitded. I know a lot of factors are involved. But I'm curious roughly how much mph I might pick up with my combination. Anyone with similar build or guesses out there? I'm Really curious....