400 Build vs 440 Build

The 400/451 package can't be beat. It has the best bore/stroke of all big Mopars. That being said, be sure you have the cylinders sonic tested. Only 1in5 pass the sonic test. Dished pistons are the best for the street. DO NOT mill the block for zero deck. Screws up intake bolt on. Use thin head gasket instead. This is a high revving, big torque, high horsepower package. Good luck