I've also ran the F-cam on my last motor, stock bottom end, H/C/I + S-Trim and it ran 10.68@131..Also my cousin had it on another stock bottomed 302 with H/I and that thing ripped. He was running 12.0-12.1 all day with his coupe. For those that say the F-cam sucks N/A I disagree from experience. I did notch my pistons to run it with 1.7's and AFR 185's. Always check piston to valve clearance.