When good is not enough, Camshaft time again.

Cam on the way.
Lifters out for refacing
Rockers on the way.
Just waiting for parts to get here. I might be able to get this done before too much snow arrives. If so I will take it to the chassis dyno to see where we are.

The more I think about this, the more I want to address the torque converter this winter. Who is the go to for this? @Mean416 the guy who said it is stalling at 4500 was Andy Finkbeiner who evaluated the datalogs from a dragstrip run. The dyno guy said it flashed or stalled (can't remember which) at 3500 during the runs way back when they were done. Might do the cam first, chassis dyno where we are. then converter and see how that changes things.