I have a 79 F250 Custom 4x4. It has the 8 foot bed. Can anyone list me the wheelbase lengths for these trucks reason being i snapped the u-joints and need to find a driveshaft at the junkyard. I took a measurement between the center of the front wheels and the center of the rear wheels and came out with 137. Did i measure wrong.

 

I have some paperwork that states, depending upon cab options, the F250 was available with: 133", 139", 150". and 155" wheelbases.

 

If your 79 F250 4x4 is the standard cab 8 foot bed, it's wheel base should be 133". Keep in mind if it is full-time 4x4 or std part time 4x4 or auto PT 4x4, they all have different driveshaft lenghts too. Standard will be the longest, PT auto next, and Full-time 4x4 the shortest. Hope this helps, ERIC D>:-)