In a way gray past, I had a 383 engine in a daily that would loose prime on hard acceleration.
Shutting it off and restarting didn't help. Only way to get pressure again was to rev the engine in idle.
One of those few times I actually heard the crankshaft spinning in the bearings...

Topping off the engine with an extra 1.5 quart of oil above the Full-mark usually took care of that issue for awhile until the oilpump was changed for a HV one.