That brings up a issue I have dealt with in the past. I have learned that a lot of people make the mistake of thinking Detroit engines were biult by GM. A few old timer Detroit mechanice told me that. They told me a GM biult Detroit does not exist. I am not saying what I learned is correct, but the things they told me does make sense. I am far from being an old deasel expert. I wish I could be so my quest for information would go a lot easier. If, they did indeed biuld larger engines than I am aware of my decisions will be a lot esier for me when I start pairing up engines and trucks in my future biulds.
Oh, and before any one corrects me, I know there was another small deisel biult by GM before the 6.2. I just cannot remember the size.