low oil pressure rebuilt 318

Kody meile said
it never gets past 25psi at 4k-5krpms

Kody meile said
its always read 50psi with a drill when priming and im assuming 700 rpms

My assumption is that when priming you are not spinning the crank (like a running engine does) so every opening and passage is not getting flow.Therefore the pressure might be higher.

I would have to agree with Rusty, check the rear plug.