Anybody running one of these LA block-Magnum head
combos? I bought one in a 78 Power Wagon and the oil pressure runs around 80 psi cold and @ 45-50 psi hot @ 2000 rpm. At idle it drops to 10-20 psi. Its not making any noise or rattling at idle. It dose have the correct AMC lifters and correct hollow push rods. ( checked these during an intake gasket change)I changed the oil and filter to a quality 10w40 without any difference. Should I get concerned or just run it?