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Old 02-11-2019, 11:00 PM   #20
Shtudwn
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Join Date: May 2015
Location: Richland, WA
Posts: 128
Re: Convert Allison 2 wheel drive into 4x4

Chris from ORD got back to me with a lot of info. Great company that will take that kind of time to provide a great response! But to be honest.... I think I am even more lost....

OK, so what if I don't care about the NP 203 and switch to a NP 261? I believe the Allison is 29 spline and the 261 is 29 as well? Anyone know for sure? If that is the case...haha... then I can mary the two. Right?

All this and I still have a 2wd trans that I want to modify to 4wd..... but I am more confused because Chris said I have to gut the Allison to make the switch. Or at least I think that is what he said... Has anyone ever actually converted the Allison 1000 from 2wd to 4wd?

Thank you again for any and all help/ideas.

Dan
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