I have a 91 chevy pick up truck with a 305 motor and the 700r transmission. the problem that i am haveing is that i am leaking oil out of the passanger side of the motor i cleaned the motor and and at idle it doesnt seem to leake but as soon as i go around the block it sprays all over the engine i almost think that it comes from the dip stick but not sure any suggestions thanks for ur time

 

Clogged PCV will cause a top end oil control problem. How's the PCV valve? The breather?

 

try a set of valve cover gaskets, they are cheap and easy to do and the stock rubber ones get eaten up over time

 

I wouldn't worry too much about the valve cover gaskets at the moment. Bad PCV will blow out a fresh set of gaskets. Once the problem's been eliminated, you'll see less oil leaking at a lower pressure. THEN replace the gaskets...