What camshaft should I use?

I assume you mean the rocker hold down bolts and NOT the rocker adjusters. I am assuming since it is running, you adjusted the valves correctly?
Yes the shaft bolts.

The car was allowed to warm up for 10 minutes. I dropped the idle down to about 300-400 and then I popped the valve cover off. Intake was set to .010” and exhaust to .020” while running.