Advancing the cam 4 degrees added some area under the curve and picked up peak power by a small amount. I'll need to spend some time looking at the data but I think this cam is just a few degrees larger than the engine wants.

I can go back to my 264/268 cam or I could get a smaller version of the new cam with the more aggressive QRI lobes. Haven't decided which way to go yet.

Never did figure out the vacuum pump issue. Appears that the switch to pushrod oiling changed the amount of oil in the valve covers enough that it overwhelmed the baffles. I added a Moroso oil separator tank and that still didn't work. So I need to pull the stuff apart and see if I can figure out what is going on.