Thanks for the reply Bill. What part of my inquiry would you suggest that I edit? The truck is a 3 ton chev Mapleleaf 1700. As far as I know my Dad told me the original engine had went out of it and it was replaced. He's the one that told me that was the story. Fact or fiction I'll never know. But it's a great help to know that this particular truck may have come out with a GMC motor in the first place. I'll keep digging for more info in the meantime. Thanks Daryl


DAz