Over 100 LBS @ Idle !!.. Yikes!!!....

What pressure gauge?

What sender?

Stock are known for not being too accurate.

Try a mechanical gauge in place of the sender before dropping the pan.

Larry

Good idea, I was just chatting w/the builder ( who didn't really want me to run the heavy spring )He suggested the same thing. Get a mechanical gauge and double check it. I may run thinner oil also. But wow!! I'm glad it didn't push anything out.

You don't need anywhere near that kind of pressure. In fact I think that if you are running a hydraulic lifter camshaft that the lifters will actually pump up and the valves will tend to not seat.

A solid lifter is a different story but even with that too much oil will get pumped up into the valve covers because it can't drain back to the pan fast enough.

Best to check it with a mechanical gauge at the top of the back of the block.

80 psi at cold idle is plenty. 15 to 20 at hot idle is fine. 10 psi per 1000 rpm is all you need but 10 at idle is a little low.

A TRW hi volume pump is the most that you should run on the street. It's really over 7,000 rpm that you have to watch oiling on a Cleveland.

Good luck with your project.

OK well, I installed a mechanical gauge and same same.... It pegs the gauge instantly. All I can say is, thank God for the removable cross member...

I switched the from heavy back to stock spring and I'm runnin' 85psi cold... it's fixed..