I had an all-aluminum 482FE on the pump on Friday. With .0020-.0023" main clearances (cold), .0025" rod clearances, and a HV/SP
oil pump, it idled at 38-40 psi hot, and at full song she was reading around 70-72 psi. That was with Comp Cams 10W-30 break-in
oil.
Most of my FE's usually hit somewhere around that range, give or take 10psi.