I just bought a 2001 F-450 for parts, it has a freshly rebuilt 6sp. Any way the guy I bought it from said that the engine had been cooked because it had been over heated, I thought that the computer would of shut the engine down before any damage could occure from overheating. Any thought on this would be very helpeful, O and the guy said that thay had thrown the serpentine belt off. Can you over heat one of these engines? 7.3 powerstroke