I took the short drive shaft out of my CCKW a few years ago. The one that
drives the rear rear axle. In some situations, like the end of my driveway
where it meets the hill I live on the truck would get stuck with only one rear
axle driving. I would have to use the front drive to get me out. I was
concerned about axle bounce in the rear with it being that sensitive to the
angle of contact with the ground. Normal every day car type situations.
I would suggest that you might want to take the rear rear drive shaft out to
give it a try before you sacrifice an axle.
My determination was that neutering the front end by making drive flanges w/o
splines was much better and caused an increase in power, gas mileage and a
decrease in road noise. YMMV
Steve
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