Will, you'll need at least 10.5:1 compression ratio to make that cam work. And unless you disassemble the motor and zero deck it with a tight squish (0.035" to 0.040"), you won't be able to run pump gas of any kind without the motor detonating. The cam is gonna want to make power from 3,400 to 6,400 and the heads are gonna want to make power from idle to maybe 4,800. I'd say you're gonna have a mis-matched combination. Who's been advising you anyway???