Gearing question 1999 TJ

I can't say for sure about a '99, but my '04 had a 3.07. That sounds about right. You could also look for a metal tag on your rear differential cover. If its still there and is legible that will give you your gear ratio.

Tag is completely illegible. Did your '04 come with 205 75's? How much trouble is it to change gears? I was a hydraulic mechanic by trade but I'm not a master auto mechanic for sure.

I had thought about changing the 3.07 to a 3.73, but since you would have to change the gearing in the transfer case as well as the differential it was too expensive for me. Way beyond my limited wrench turning ability and the quotes I got put it out of range for my budget. I eventually traded it in on an '06 with 3.73 gearing. :-)

You lose me here. Re-gearing the rear diff requires matched gearing for the front end but the only change to the transfer case is the option to change out the speedo gear - a one-banana job.

I suspect that the quote you got was for both ends and that is a challenge. Any change in the differential gearing really requires considerable experience and some unique tools to get it right. Not a shade tree job, by any means. Even the parts cost surprises a lot of folks. On my MJ, it was cheaper and faster to visit the local junk yard and pull both axles off a wrecked XJ. Bonus was that the replacement rear end was a D44 instead of the stock D35.

So for a '99 TJ what year axels will work? 97-06? or will later axels also work?

Like so many politicians I "misspoke" I meant front transfer case. My bad.

Good grief I can't even type what I mean "front differential". Total senior moment times two. :-)

I'd make some smartass comment but I forget what we were talking about.... ;-)