Is it cause the m1009 are 24 volt? Other than that they are the same as a regular blazer for the most part , aren't they?
No.
Martin
Why then? 700? Gov bomb?
I'm going to respectfully disagree with Martin here. Aside from electrical differences, the M1009 rigs are pretty much what you would get if you stripped down a stripped-down diesel K5. One of the differences is that they got TH400 trannies instead of the 700R4 that the K5s usually got.
If you are comfortable with the stripped-down-ness and quirkiness of an M1008, and you're aware of the gov-lock failures (which are by no means unique to the military rigs), I'm not sure what negative advice to give.
If you aren't familiar with these rigs, and you don't like electrical wiring, you will probably get annoyed with the electrical modifications eventually. If you don't like having a loud tin box on wheels, with no insulation, no features, no dome light, no interior linings, and the most basic of hardware, CUCVs are not for you.
I'm guessing that Martin's complaint is that they all came with 3.08 gearing. Am I right?

I kid...........