Had you been having oil pressure problems before that happened? You don't think you have an oil port stopped up in the block somewhere do you? I put a high volume pump in a 302 for my old truck and it provides plenty of pressure. I have a 7 quart oil pan on it though. I also have one in my old chevy truck which has a 5 quart oil pan. If the oil gets a quart low and I hammer on it it'll suck the pan dry and I lose pressure so be carefull.