You were talking about the cam bearings being installed wrong. If this is the case you would have no oil or very little to the top end. I know this is going to sound strange BUT I may have an idea. On late model Dodges(I know this is not a Chevy) 318-360, there has been a problem where the oil doesn't return to the pan. The intake manifold creates a vacuum and holds the oil in the valley. This only happens in the mid-upper RPM's. The problem there is solved by opening another return to the bottom end. The only issue here is that on the Dodges it shows in a drop in oil pressure and yours is fine. I'm still scratching my head on yours though. :confused: I don't think I'd go Dirty Harry on this thing yet. :p
