Make your own Oil Pump Priming Tool
This tool can be used to prime the oil pump and oil passages in a freshly rebuilt older small block or big block V8 Chevrolet engine prior to starting the engine for a break in run. It can also be adapted to work with a Chevrolet inline 6 cylinder engine.
Remove the roll pin and bottom piece to use it for an inline six cylinder Chevy engine.
Follow the steps pictured below. You'll need a few simple shop tools and an older style worn out SBC V8 distributor.