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Discussion Starter · #1 ·
I got a ford gt-40 aluminum head 302 and have had problems with it breaking up at 5000 rpms and up. Runs strong to 5000 rpms, but then starts feeling like it is not firing fully on all all 8. I am running a cobra highrise intake and a stock distributer with pertronix coil and point conversion. Holly 650 double pump. I was going to replace the distributer with a probillit msd one soon anyway, but thought it could either be the ignition system or the valves floating. Any ideas??

67 mustang coupe
70 mustang mach 1
88 mazda/ford mx-6

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