For BIG INJUN heads that flow, check out www.rolandracing.com and see his newly designed A-heads. These were not designed to pussyfoot around, but to enable big power. The only thing they really have in common with this particular thread is they are aluminum.
Been waiting on them myself. Use bbc vlvs and springs, and no $$$$ shaft rockers for high lift cams. Have to use a ford tunnel port intake, or wait for intake to head adapter plts. Can you say 700hp under 7000 rpms
