It's far more likely that you've got some badly worn bearings that are consuming more oil than the pump is able to provide.
I agree with Jerry. When I bought my ‘52 with a rebuilt 235, my oil pressure dropped to less then 5 lbs at idle when hot. I spent more than a year chasing the issue before I pulled the motor and disassembled. The rebuild turned out to be really shoddy work (bearing clearances were all over the place from too tight to .010” too loose) that required me to have a competent machine shop regrind to everything to the next size bearings.
