Before I get flamed, I've searched and not found my answer. I have a 27 spline 8.25 and want to swap it to 29 spline. Here is my question. Everyone says that inorder to do this swap you must swap the carriers, why, what is different about the carriers? Why can't I just throw in a 29 spline lunch box locker and 29 spline axles? What are the differences in the carriers?

 

The 29-spline shafts are bigger diameter so they will not fit into the carrier case of a 27-spline. That's why you have to change the entire carrier.

 

Thank you! Everyone just said you have to change it and not why.

 

Is your 27 spline broken?
The 29 spline may be stronger but the 27 is stong on in its own right

 

I found a locker for a 29 spline and wanted to figure out if it would work.

 

It would be easier to just buy a 29spl axle from the scrapyard and put the locker in that I imagine.

 

To the average person not equipped to redo the backlash after swapping carriers, yes it is easier to just swap a whole new rear in as a whole. However, it probably wouldn't cost much more (if any at all) to pay a shop to set the backlash for the new carrier, just setting the backlash isn't gonna take long at all, maybe 2hrs worth of labor to swap carriers and reset the backlash.

 

I would try to trade or sell it and buy one for yours. less work and hassle. you can proly get more for your 29 spline than you could the 27 spline.

I just put a Dana 35 Lock Right in my 8.25 27 spline. I don't know if it is possible for other people since I am the only person that I have found that has done this. It does work though. (I thought I had a Dana 35 when I bought the locker and installed. Didn't figure out I had a 8.25 until a week later but it works great haha)

 

I have a 27 spline with 4:10 gears now I'm wondering if I can use a d35 locker now. How did it fit?

 

The Gears may be the problem since the ring gear would stick out further. There isn't much info on what I have done since I am apparently the first to do this lol. I done it by accident too haha.

https://www.cherokeeforum.com/f59/da...tested-145211/

 

Does it hang put of te carrier or something? I had to remove the carrier and ring gear to install my front locker

 

I think You would have to remove the Carrier and ring gear with 4.10s I'm not sure though I'm no expert. Obvious since I put a locker for a different rear in mine haha

 

How are the gears the problem? Does the lunchbox locker hangout if the carrier since it is for a d35? I have to remove the carrier and gear to even get the center pin out.

 

Yes with 4.10s you have to remove the carrier and take the ring gear off to put the locker in cause the pin will hit the gear as its thicker than 3.55s. On the d30 the carrier is small and the pin hits the gear so you have to remove it as well to put a locker in or even spider gears.

 

Did you remove the lock bolt? Might need to chisel and hammer it out