12-22-2019, 04:46 AM
My 71 Mach1 with the 500+hp Cleveland Loped really heavy. 520 Lift --288-Intake, and 292 Exhaust, Sig Erson Cam I kept it Idled at right around 1000 RPM, and didn't have much trouble with it pulling against the brake, It would lock up, and spin the tires at about 1200 RPM. So just from the "seat of your pants engineering" 200 RPM was enough to maintain near normal drive ability, with the stock converter. It was better then stock taking off, but once it past 3000 RPM it came up on the cam, and got NUTS!!!!! The only issue I had was not quite enough vacumn, to work the power brakes. But it wasn't unmanageable.
JTS
JTS