I am finishing up an axle swap on my 90 F250 4.9L and I just ran into a pretty annoying problem so close to the end. My drive shaft u-joints are smaller than the yoke on the 97 F250 Diesel. I removed both yokes and found that although the splines are the same pitch, the Diesel has more length of spline attaching the yoke on, so I can' swap them between axles. Is there an easy solution to my problem? I'm hoping somone has been here before, but searching for this topic has not been too successful for me.

 

have the drive shaft yokes match the diff. yokes

 

This is the (older type?) slip spline at the transfer case. I'll search the junkyard to see what I can see. Maybe I'll have to have a new drive shaft made unless I hear a better solution from one of you guys.

 

I found an article that helps explain what I'm seeing here.

Ford 10.25 & 10.50-Inch Axle Tips - Four Wheeler Magazine

I plan on going with a conversion u-joint with 1330 on one side and 1350 on the other side.