crankcase pressure

my engine (sbf) has excessive crankcase pressure. I have ordered a moroso pump Etc.

my question is Does excessive pressure have an effect on oil pressure? Is the pressure caused my high compression or un seated rings?

I am replacing the rings with total seal gapless as well.

A vacuum pump is a good idea but its not a fix for leaky rings. I'd stay away from the gapless stuff.

Warm up the engine and do a leakdown test..............

I would just re-hone the cylinders and change the rings. I never use gapless stuff either.