Don't read if you're close minded

I agree.
I was thinking it was gonna be 6-10hp.

It was an eye opener for sure.

Those heads came off a 9:1 358” 18* nascar engine.
Up here, that series had to run 390cfm carbs.
They would pull about 8” vacuum @8000.

During a dyno session on one of those I swapped on a hp950.
It picked up almost 100hp.