Hello everyone! Newbie here. I've installed a 12 valve Cummins and a HD4500 2wd tranny into a 1973 W200. Has divorced transfer. My problem is the tail shaft on the HD is too long and only gives me app. 3" between yokes. Question: What would consist of swapping a GM tail shaft with the Dodge. GM is shorter.

 

why cant you move the t case back

 

https://www.dieselbombers.com/images...inking.gifThat would seem like a easy fix. But that would require the front drive shaft being that much longer and the factory length was long enoughhttps://www.dieselbombers.com/images/smilies/neah.gif

 

my front drive line is 44" long and my rear is 24" and im running a divorced 205 in a blazer with a getrag and a 8.5" long drive line in between the two

 

Depending on the year, you should be able to just swap out the mainshaft and the extension housing.
You'll want to stay away from the pre-'95 GM trannies, as I believe that's where the changes were more significant.

If all else fails, call the guys at Zumbrota Bearing and Gear (ZBAG), 1-800-658-2537 and they would likely give you the correct information.

Mark.