Thanks Dave, On a real mild 302 with stock valve sizes,alum intake,600cfm Holley and good ignition,and a Crane 216@.050"/.484"/110 LSA cam,the seat of the pants increase in torque,and horsepower was VERY noticeable.The engine just ran "better" all over,and picked up about 500-600rpms before it wanted the next gear. I would guess you could pick up between 25-50hp depending how mild or insane your combination is. Stock heads are going to choke a big solid cam,but once you open the heads up the power will really wake up. Scott Posted using the Full Custom H.A.M.B. App!