Oil light flicker

I had a low oil pressure at idle problem in my Nissan (P.S., I do have 383-S Barracuda) that was caused by the oil pan being bent up into the pickup. Once I straightened the oil pan, everything was great. It's not always the bearings.

This is kind of funny. I had a friend in the navy put small block chevy lifters into a small block ford. They rattled around in the bore, which wasn't noticed during installation (I think beer was involved). Oil pressure was non-existant at startup.
Rod