Doing some work on the old ford and dropped some needle bearings in the gravel... there are two sizes of u-joints that are on the front driveshaft of a 78 with a dana 44...


Which one do I got?
The sizes are for a 3-1/2 or 3-7/8 I believe.

 

Take your caps and cross shaft to Napa or Carquest. If you order online it'll for sure be wrong

 

Yeah I might do that. I am pretty sure its a 3-1/2 but dont wanna chance it.

I measured from the center of the u-bolt hole to come up with that measurement.