Boarder Line Low Oil Pressure

Mcfarlrm said

Appreciate the recommendation. I'm not aware of the clearances nor did the previous owner have this info. Oil pressure has always been this way since the day I purchased it a couple years ago. Do I need to add a zinc additive to these? I currently run Lucas Hot Rod with high zinc.

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The zinc is for the flat tappet cam and lifters.
Low hot oil pressure at idle indicates to me that bearing clearances could be a bit excessive. I would remove the oil pan to plastigage the main and rod clearances.
When you are checking the mains, you have to support the crank as the weight will cause a lower clearance indication than actually present. My method is to use a piece of cereal box cardboard in #3 and just snug those main bolts enough to hold the crank up. Then plastigage the other 4. Then put cardboard in #2 and #4 mains to check #3. This is not needed on the con rod bearings. If the journals are std and the clearance is a bit high, you can install 0.001US bearings to tighten it up.
If the crank has been ground US, it is possible the wrong size bearings were installed. New bearings can be carefully rolled in with the crank and rods inframe.