Ford Windsor 427 SB excessive oil pressure

[Davidless]

Thanks for all the info

The Ford long block I bought comes with a high volume pump, nothing I changed.
The engine will be set up with an external oil filter and the supplied filter is a high volume racing filter and the pan holds 9 quarts.

Today I spun the pump with a drill and could get it up around 85 psi.

When using the test stand at idle, warm oil, gage read 80 psi and fluctuated when revving the engine.

Not sure I understand about reducing the bypass spring force, in that case what’s the sense of using a high volume pump?

I find it hard to believe that I have the only long block from Ford that has this problem. Based on my serial number they should be able to see if there were any problems similar to mine.

Guess I will wait and see what the engineers at Ford say about it, after all they have to give me a 24 month warranty, just don’t want to remove the engine from my car if this isn’t right to begin with.

Thanks again for the reply’s.

David