Join Date: Oct 2001
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Re: Drive shaft lengths. 77 lwb k-10
In its current position, the driveshaft measures 66" from center to center of the universal holes. While measuring a few thoughts came to mind. One my NP205 has a fixed yoke. I dont know if your NP203 has a fixed or slip yoke. With a slip yoke i dont think that a drive shaft like mine could be mated up. The other thing is that my truck is a 3/4 ton and has the 14bFF in the rear. This means that my universal joints are going to be larger than yours (if i remember correctly you have a 12 bolt rear). I know that they make adapter universals that allow 14 bolts on 1/2 ton drive shafts so you could mate the larger shaft to smaller rear, but still something to consider. I dont know if this combo was available in 1/2 ton applications or not. Hope some of this helps ya.