disapoining et

A 4160? Vacuum secondary? Secondary metering block or metering plate?

It's not making any power with that MPH.

The carb and ignition would be the first place I would look. Getting more than 850cfm from a small 1 11/16" blade carb take a bunch of work. Call me a doubter. Might have way too much jet in it.

Low compression and the cam being installed in a bad ICL won't help.