1956 Chevy 3100 pickup, 235 engine:
Got everything back together, engine, transmission, and driveshaft. Filled the engine with oil both in the pan and the filter. Decided to do a quick test on pumping oil. Inserted large flathead screwdriver into distributor opening and turned the oil pump using a drill. No oil along rocker arm shaft. Only oil came out of the gauge connection fitting I mistakenly forgot to close off. Plugged it and tried again. No oil showing up. Decided tomorrow to hook a gauge up to that same oil gauge connection and see what kind of pressure I'm getting when running the "drill" test. Otherwise, I plan on dropping the pan and checking out the oil filter. I don't understand what could go wrong with the oil pump as I had taken it apart and thoroughly cleaned, along with the pan, etc. when I had the engine out of the frame and on an engine stand.
What's the likelihood of the oil pump going out? Before I started the teardown I had fired up the engine for a very short period. It sounded good and the dash gauge read 40 lbs pressure. My b-i-l said using a drill probably is not enough to pump oil and the engine needs to start up.
Anyone's thoughts are so very welcome. I don't look forward to pulling the pan. Thanks!
