605 to 655 cubic inch with Predator heads. The only doubtful is a single carb which would have to be at least a 1450 but easy with a tunnel ram and 2 dominators. I know a member here that had a 605 Predator with 2 carbs and with weight, et, calculation was right there with 2 carbs. I am in Ohio if you are close. Birdtracker
