I also don't know how it could be running out of oil in the 1/8. The big block I ran for a long time had a stock pan and a HV pump with no problems. I was only shifting that motor a 5500. When I first built the 383 there was a problem with the oil pump I had. When the motor reached about 180 degrees the the pressure would fall to nearly 0. I tore it back down an replaced the the pump and bearings just to be safe. That is when I learned of the problems with Melling pumps and did not use a melling the second time around and never had anther problem. I do not remember why I put a high volume pump in this one I learned more since then and know they are really not needed.