This is another engine that was at the mercy of its operator. Left on its hottest tune, this 6.0L was given the task of towing and working and only lasted 5,000 miles after receiving an ARP head stud install. As a result of too much timing, the piston became the weak link, and cracked. It’s important to run a tune that matches your driving habits—like not towing 10,000 pounds in a race tune. We should also note this in no way designates a 6.0L’s pistons or rods as a known weak link, because everything has its limits. In fact, with spot-on tuning, we’ve seen one of Elite Diesel’s 6.0L Power Strokes make more than 700hp on stock pistons and rods.