StingrayL82 wrote:
The other option, and I don't know if it would work, is to swap out the Dodge axle shafts for the GM axle shafts. Correct me if I'm wrong, which is quite possible, but didn't GM use Dana 70 axles as well?
Purty much nope on swapping GM axles for Dana 70 axles, plus I
love Dana 70 rear axles as manufactured.
It isn't just the 'heads' of the full-floating axle shafts. The outer part of the axle hubs are the same -- larger -- diameter. Likewise the splines and length of the axle shafts are (probably) different. ('Probably' different because I haven't actually checked but there a half dozen or so critical dimensions that have to match OEM axles.)
I'm not aware of any Dana 70 axles in GM light duty (1-ton and below) trucks from the factory. It's entirely possible ... and even likely ... GM used Dana 70 rear axles in their medium duty trucks. (I don't have any pictures of the Blue Beast -- a '65 1-1/2 ton GM stepvan I rescued from a junkyard. Otherwise, I could try to see what was under the back of truck.)
IIRC, GM 1-ton (and maybe some 3/4-ton) light duty trucks, had six tire mounting bolts per wheel.
