revlimiter

  1. J

    1972 Mach 1 wont go above 4k rpm

    So I’ve dreaded doing this for a while because I’ve searched far and wide for answers and I’m still left with the same problem. I have a ‘72 Ford Mustang Mach 1, i bought it with a 2v headed Cleveland, FMX, and a 8in rear. It is a true Q-code car so it is supposed to be a 4V cleveland, with a C6...