360la loosing oil pressure at high rpm.

When you put the pan on, did you take notice to the pick ups clearnace height to the pans bottom? It could be high. You really wnt to get it down low.

Did you check clearance of the rockers or measure any thing on them, if they rock on angles when on the shaft?

I have extra shafts. I slid my Comp roller rockers on them. I noticed they were tight on there. I had to move them myself. They would not flop over, just stay where they were when I pisked them up on the bar.

I moved them all over to a set of MP hardened chrome bars and they all moved very smoothly with no play on any angle. They would spin around with a flick of the finger. Not so on the Comp bar. Stiff they were. Like rig on the dead.