What heads are you running? I would say that theres not enough duration in that cam to get 700Hp but it should be up there. My 4.15 stroke .055 over 440 is dynoed at 750hp on 93 pump gas. My cam is a Comp solid flat .662 - .672 lift and 267 - 271 duration at .050". 11/1 comp with cnc'd indy ez heads. Indy single plane intake and 950HP carb. I have since switched to a 1000HP carb. We bolted on an Indy tunnel ram with 2 - 750HP carbs and made 773hp.