If I wanted to have my factory dana 44 with the trac lock LSD regeared to 4.56 would the diff carrier need to be upgraded and which gears would I need to order (thin or thick) thank for any advice. if it matters I have a 87 Xj with the 4.0 ad automatic trans.

 

If you have 3.73 or higher currently you don't need a new carrier, lower than 3.73 then you will. What axle is in it currently?

 

currently have 3.55 gears but also have the trac loc limited slip carrier. would like to keep the track loc limited slip if possible.

 

You will need a new carrier to go to 4.56. You can get a full locker, 3.73 and up carrier with lunchbox locker, or get a detroit locker. Bottom line is you need a new carrier, and if your doing the back you will need to do the front unless you want to blow your TC. I have a fully built 8.8 setting in the barn waiting to go in, have to get the front built, setting on the fence if I want an E locker or ARB.

 

The factory limited slip is junk, it's no loss getting rid of it, I would just go with an open carrier and put a Spartan locker in it.

 

You can use a Yukon 4.56T on your current traclock. Jury is out on them for me. I have seen several that were so worn and loose I thought they were open. But on the other hand I have seen one that works quite well.

 

Is that the thin or the thick gear set?

 

"T" is for thick

 

Thanks