Lets be realistic, he wants to ruin a good motor because hes an idiot. You know what, its cool with me, know why? Merica.
Anyways, I had a 6.4 in an ups truck run away on fuel. That was fun. Went for probably 10 minutes. I was so shocked it happened. I was hooking up my laptop in the bread truck, and the throttle blipped without me touching it, and I stared at it for a second, then the motor went full bore. I kinda jogged away from it and stared at it for a few seconds from 50 feet away confused as to what had just happened. The other mechanic who saw me said it was pretty funny the look I had on my face, a mix of fear, confusion, and annoyance. The truck had just had a reman high pump put on, I assume that failed internally and full bored the fuel. I didn't try to stop it, as that truck, was under warranty. The reason it still had a warranty on the motor was that was motor number 2 in the chassis. Go maxxforce 7s.