they are 1974 windsor heads and I just had the machine shop dip them and check them for cracks and install new valves where needed. But no porting was done at all. I think the clutch pack is worn in the rear because it only spins posi sometimes. I am using 245/60/14 bfg radial ta's in the back. I just bought a pair of slicks today to bolt on my draglites. I got a 27-12-15 goodyear slick on a 15 by 10 rim. There shouldnt be any spinning at all with them. Also I dont have any subframe connectors yet. My MPH was 96 i believe. I am still running the stock fuel pump is this ok? I am getting about 6.5 to 7 psi at idle out of it.
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