Rear Axle Adjustment And Drive Shaft Angles

So I got a Woody , traded emails with @Shawn at Tom Wood's and now have front and rear DC on my TJ and a rear DC on my CJ5.

My TJ I finally got time to make some rear axle adjustments getting ready to do a Bl, MML and Savvy Under Armor Up skid.

The axle is exactly square now, was off a 1/4” or so, didn’t really notice. But it’s on now.


I’m a little concerned with 2 things, first the distance of thread I can go in the Savvy upper CAs and second the amount of spline showing on the DC.

I believe the wheel is centered well, and still on bump well. The angles are 14.6 Drive Shaft and 13.2 pinion. So a 1.4 degree difference. I may bring back to lowers to get to 1, but 1.4 should be fine. Ram it with no front DS and was on the freeway at 75 smooth and 80 here and there. Good to go.

I’m a little concerned with the drive shaft. I may have gotten too short, and now with the Savvy skid just not sure. Looking for advice on anyone that has Savvy CA’s on the actual distance we can let them out? Do I need to pull one, get exact measurements and a % has to be in the arm? Certain % thread showing? Or are they uniform and do we know the exact thread measurement that can be showing ?

Thanks a ton

I’m also concerned because needed to grease the front CV and when I put it back I know I need to adjust the Caster/ Pinion some, and the front Uppers are out already. So need to know the limits on uppers.

Blackjack said:

Not sure which exact stub shaft @Shawn at Tom Wood's is currently using but I do not think you are too off on it. From you pics though I think you might want to bring tha axle forward just a touch to make sure you are not having interference issues at full stuff. That would also alleviate both your driveshaft and control arm concerns as well.

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Was thinking that. Last one graduated, will get her off to Texas and be able to have more time to get this done. I’ll probably move a touch forward, and it’ll be good for the Savvy Armor then I’ll cycle em. Thanks.

Shawn at Tom Wood's said:

The shaft is a little bit over-extended but not enough to be unsafe or problematic. More about that here https://4xshaft.com/blogs/faq/how-much-of-my-spline-should-be-showing

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Much appreciated. I will probably bring rear in a touch so there’s room for the Savvy. Rig is getting there, thanks for the quality parts and feedback.

Shawn at Tom Wood's said:

The shaft is a little bit over-extended but not enough to be unsafe or problematic. More about that here https://4xshaft.com/blogs/faq/how-much-of-my-spline-should-be-showing

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https://4xshaft.com/blogs/faq/how-much-of-my-spline-should-be-showing

Your phone added a . At the end and the link wasn’t working, ha, all good found it easy and will read it.

Made adjustments.

I think this will be good.

Pinion is .4 below the drive shaft angle.

The slip yoke is in the good range not on the outside.