Just bought a 77 pick up with a 440. Checked out the ID pad today and it says J 440 HP. Can anyone tell me some specs on this engine? I am assuming it's a 72 engine, but I don't know if they had 6pak rods or forged steel crank. It does have the small balancer on the front, but did it come that from the factory? I'm not sure when they started using cast cranks.