I did the head swap as part of a rebuild to remedy a low oil pressure issue. The 318 is in a 68 Coronet 440 Wagon weighing about 4000lbs with 2.76 gears and the cam was selected to add a little more low end torque with reasonable gas mileage in mind (Comp XE 256). My stock pistons were .060 below the deck so the EQ heads (stock valves) didn't hurt compression and added breathing and velocity on the low end. I do not know the hp and its a cruiser so no track time. I really like the low end and she pulls well but until I install the Treblig modified Magnum exhaust manifolds and dual exhaust I won't realize the full potential of my combo.
