[Tinker]

Bearings limit flow. Better bearings better pressure. If you need to add more oil pressure I'd last to think the pump. But too much pressure is just that, same with flow. In my opinion on a flathead. 90% of us don't need 90 lbs of oil pressure. A few might. 10lbs is all you need hot idle. If you think you need more oil pressure on a flathead, add more fuel pressure to your carburetor to make it faster.