Driveshaft Confusion & Frustration!

[tunkx90]

I'm completing a 4-sp tranny converison in my '73 FJ. I've installed a '77 trans and transfer case. The driveshafts I have are also from a '77 but the yokes' bolt pattern doesn't match up to my '73 differentials. What do I need to do here? Can I switch the yokes and u-joints from the '73 driveshafts onto the '77 driveshafts to match everything up?

 

[3_puppies]

will the slip yoke flange match your diff? use the slip yoke from the 73 on the diff and the driveshaft from the 77 on the trans. They will be "upside down", but others haven't had problems doing this.

 

[ranger]

will the slip yoke flange match your diff? use the slip yoke from the 73 on the diff and the driveshaft from the 77 on the trans. They will be "upside down", but others haven't had problems doing this.

Done this on a couple of rigs with no problems.