new race car, no oil pressure

71gtdart said

not driving the tube in to far, not driving it in far enough. if he only drove it in far enough to get past that last lifter bore, then he could have the passage coming up from the oil filter blocked off.

also, I wish it were as simple as a defective oil filter, but I already tried another one, and got the same result.

Click to expand...

I know the oil flow diagram I posted is small (sorry, all I could come up with) but your not looking at it correctly. He could drive the tube in until it hits the rear wall and it will not affect pressure to the other parts.

Do you know if he clearanced the pump for the ARP studs? Was the oil pump disassembled and clearances checked and cleaned thoroughly before it was installed? That's something that needs to be done EVERY time you install one. You wouldn't believe the garbage I've seen in brand new pumps.