So I finally had the chance to buy an ss. its a 2004 with a lot of tlc needed. my biggest concern is that when I come to a stop there is no oil pressure but when I start driving the oil pressure comes up to about 20 psi and stays there while driving. I replaced oil sending unit sensor and oil pump but no change. I am at the point of rebuilding with all new cam and rod bearings. Does anyone have any other opinions what might be the issue? If I rebuild does anyone recommend a good camshaft that does not need to be tuned?