Posted by Keith in Washington [108.162.245.67] on Sunday, March 26, 2017 at 13:50:10 :
In Reply to: Re: Interchangeable 3rd members? posted by Tom Petroff (IL) [108.162.216.13] on Saturday, March 25, 2017 at 20:58:41 :
I suspect that Dozerman got his differentials from civilian trucks. But he has a 1/2 ton closed cab so fitment is not an issue. The early 3/4 ton axles had the smaller 1/2 ton derived differentials. They were the beefier 1/2 diffs but still were not strong enough. You can put 9 5/8 gears in the early axles.
Some Route Vans had the same differentials as the PW but were a 4.30:1 ratio. They are impossible to find.