Just test ran that engine. It turned that 20 x 8 Top Flite at 7700 rpms after only 10 minutes running time. Not bad at all. I know it will get better too, because it has stock rings in it and they need to break in. I didn't use Frank Bowman rings in this one because it had brand new factory rings.

It will idle down to 1400 rpms, and warm restarts are one flip deals.

AV8TOR