Cj7 cv drive shaft

[doublec]

77 CJ7 Dana 20 Transfer Case and AMC20 - Yukon axles

This is my camping vehicle and will only see class 2-3 runs, nothing major. I plan a buggy for the real stuff. And yes, for go the Dana 44 / D60 upgrades.

After completing the SOA lift (approx 4") I planned to go with a CV drive shaft. I do a lot of research before starting any new project and have spent a few hours regarding this subject. I see many have used the Bronco, 80's Chevy and Ranger, and don't forget the XJ / TJ front. I will cut and weld what I need to, local driveline shop for balancing.

I have to replace the pinion seal and truss the AMC20 . Since I will pull the yoke I though I would research a larger u-joint that will fit the 20. The Bronco uses a 1330 or 1350 vs the 1310.

Didn't see anything in my research. Thought I would ask if anyone has knowledge where I can purchase larger yokes out there. This will direct me which way I spend my time researching.

 

[BusaDave9]

For drive shafts I only go to Tom Wood's Driveshafts.
I once went to a local shop when I needed the slip joint replaced on a drive shaft. It cost me $347
I later ended up replacing it with a custom made drive shaft from Tom Wood for $224. More than $100 less than what the repair cost!!!!!!!!!!! Plus I got new U joints.

Then I was worried that my shackle reversal was bottoming out the driveshaft so I called up Tom Wood.

He replaced my slip joint with one that had a 10 inch stroke. Cost me $105. That's the same repair the local shop charged me $347 for. Actually Tom Wood had to shorten the shaft to add the long travel slip joint.

Every time I work with Tom Wood's Driveshafts I get multiple phone calls and emails from Tom and his mechanics. to make sure my measurements are right.

That's it. That's my only advice, Tom Wood's.

Tom Wood's Custom Drive Shafts - Tom Woods Custom Drive Shafts Custom Driveshafts Specialist

EDIT: Oh I forgot to mention I also went to Tom Woods for a rear drive shaft with a Double Cardan joint like what you are contemplating. When I went with a Double Cardan joint I also received a new yoke to replace the one on the Dana 20 . I'm sure Tom Wood will let you upgrade to bigger U joints.

You always get heavy duty U joints with a Tom Wood Driveshaft.

 

[Old Dog]

I'm not sure what might be out there as the 20 has a 28 spline pinion which is kinda odball. The ford 8.8 and 9" are the only other 28 spline pinions I know of.
You might try complete offroad or drivetrain america they both sell yokes.
I'd check my angles before I went with a bigger joint as a 1310 can work on a steeper angle than they can.

 

[Old Dog]

Here's a link to some u-joint info, about 3/4 of the way down the page theres a chart with what angles they can operate at
Pirate4x4.Com - Extreme Four Wheel Drive

 

[doublec]

I agree with you, I'm a DIY type person. Try to do it myself first. Eventually I will swap out the rearend which will need another drive shaft. Trying to save on cost. Thx for your response.

 

[doublec]

Old Dog, Since I couldn't find the large yoke on the major suppliers I figured they were not available. Just wanted to make sure. Guess I'll go with the stock size. Thanks for the link