I did a search and found a similiar problem but the fix is not my situation. I know there're some pretty knowledgable SBC people on here so calling for your help as I'm totally stumped. I've spoken to some pretty savvy people and they're stumped too. Here's my situation: I installed and fired up a 350 that sat around for about 12 - 15 years that ran when I pulled it out. I pulled the pan and heads and cleaned it out best I could, did a valve job and reassemble it. This BTW is a temp engine just to get the car running and bugs worked out before "real" motor goes in. Primed it and got it to fire with 60# oil pressure. While adjusting the hyd. lifters, I notice there's no oil coming out of the rockers. Engine ran for about 15 - 20 minutes. Things I did: checked the front three oil galley plugs - all in; blew out all rockers and pushrods with air; installed another set lifters; swapped the rockers (Crane gold) with stock rockers & pushrods; pulled lifter out, primed engine and saw oil going through oil galley; stuck lifter back in and oil is coming out of lifter - but won't push it out the pushrod. This is with 60# of oil taken from front of the block (so I can watch as I'm priming). I even checked the diameter at bottom of the distributor shaft and it's same size as a stock HEI unit. I've been wrestling with this for too many days now - totally stumped! Anyone come across a problem like this before??? Thanks in advance!