C60X workshop manual

[Tony Smith]

Originally posted by Hanno Spoelstra
The subject was discussed in the thread GMC 270 engine in CMP vehicles, but apparently that time you weren't around to help us out

Where was I then?
I'm going to have to go back and get more pics of this truck, aren't I?
Some of the more obvious external differences:
The "Harmonic Balancer" on the front of the C60X crank is a press on fit with internal slot for hand crank handle, CCKW is a slide on fit with a retaining bolt with starter dog (like Ford).
C60X 270 makes 125hp at 3000rpm, CCKW is governed to 2700rpm, NOT TO BE EXCEEDED.
C60X distributor has vacuum advance/retard plus internal flyweights, CCKW just flyweights.

I don't have a parts book for a CCKW or DUKW, so can't compare part numbers, but if anyone else does, we can solve some riddles.