Small-Block Chevy Oil Pumps - The Great Oil Pump Test. Mix A Big Batch Of Pressure, Volume, Oil Viscosity, Temperature, And Engine Power And You Have The Makings For The Great Oil Pump Test.

The small-block Chevy pump used here is spun by a 1/2-inch electric drill motor driving a standard Chevy oil pump driveshaft mated to the oil pump's drive tang and plastic sleeve.

The oil that is supplied to the pump travels through a full-flow oil filter into a 1/2-inch main gallery on a small-block (9/16-inch on a big-block) that is located above the camshaft.

A year ago, the shop that makes custom oil pumps was busy. So while owner Ben Bilbrey, his wife Corinna, and their team, enjoyed the peaceful afternoon in July, anxiety loomed. It's not usually ...