Rebuilt Engine, Super Low Oil Pressure :(

I'm over in Vacaville and don't troll here much. Who did the machine work and were they the ones that you got your parts from? I have yet to rebuild a /6 but have built a few motors and currently helping my brother with his 383. From what it sounds like you really should have done a more throught job of cleaning and checking and re-checking as you build. If you have to rebuild from scratch, I recommend that you find a good engine rebuilding book and read and follow it. Something else to look into, read here. http://www.slantsix.org/articles/oil-pump-gear/failure-fix-report.htm