I have an edelbrock performer RPM camshaft 7157 and as far as I can tell it's just a regrind of the Pontiac 041 ( 9794041) cam. I'm at about 14" of vacuum in my 400 ci. Ought to make my power brakes a bit interesting.
If don't have enough, can add a vacuum can. Had one on mine. Worked good. After loosing a P/S line at the track, decided to delete both P/B and P/S. Turned out, like the feel of both better.
