Ticking 340

I just pulled the left valve cover and noticed not very much oil flowing in there. I didn't even need to put a rag on the exhaust manifold to catch the oil that flowed out because only about half of the rockers were spewing oil and not alot of it.. I am lost. Any ideas out there? I put an oil pressure gauge on it and got 70 lbs. cold and about 30 at idle hot. Man, I need help with this. Thanks guys. You can hear the rockers ticking when the engine idles and the v/c is off. Don't think it's an exhaust leak.