Correct Oil Filter for SB

The machinist put the motor together. We received a short block with oil pan and timing cover on. We went to our mechanic's shop to initially fire the motor. And it has had low oil pressure since day 1. I have talked to the machinist and he said if I take the motor out and bring it to him he will look it over. I just don't want to take it out and bring it to him if there is a chance I can find the problem first.

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