We just dynoed a 492 inch Mopar today with TF 240 heads. CH28 intake with dual FiTech throttle bodies. Cam was hyd roller with 236/246 duration. Very smooth idle with plenty of vacuum, made 600 ft-lbs of torque and 540 hp. Pretty much done making power by 5500 rpm but that is okay with the owner. He wants an engine that he can cruise to car shows with his wife rather than a race engine.
Headers or ex manifolds?
We used my 2 inch race headers on that engine although it didn't need them. Might have made better numbers with the smaller dyno headers.
