Did 4.10 ever come from factory 97-01 in HPD30 and 8.25s? Found a guy selling a the pair. He doesn't know if it's 27 or 29 spline 8.25 though. Currently have the same setup w/ 3.55.

 

4.10 was the standard gear ratio for the 2.5L models. 4.0Ls mainly came with 3.55 (Auto) and 3.07 (Std)

 

Some rarities do exist......I looked at a late 80's 2 door, 4 cyl, 4x4 that had the AW4 trans, and 4.56 gears in it....all factory.

I needed the trans, and wanted the axles....but the trans had some issues I couldn't verify, so I passed.



And as far as the speedo being corrected by a combo of gearing & tires......my 96 has had nothing done to it as far as the speedo gear, but with 31" tires, it now reads off by 2 mph @ 60 by GPS.

The factory speedo was off by a good bit, which explains why I thought I had such good gas mileage.

 

How hard is this to set up? Do you just run the output of your first tcase into the second and run driveshafts from there?

 

8.25 29 spline came out in late 96 and up and early 96 and before were 27 splines both strong axles

 

Okay so I was just looking at doing this today what's a good brand for a good price and how much do shop charge to do it I'm scaredoing to mess up and waste alot of money

 

Expect to pay at least $250 per axle to get the gears installed. Gears are around $500 with install kits, etc.

 

^ is that for new ring and pinion gears OR If I show up with junkyard pinion and ring gear carrier assembly?


Also related:
I been looking into the Volvo rearend Dana 30 locker/ ltd slip / gears & carrier option
Do any of you know anything about that?
I believe they made an e-locker (or e-traction control?) differential - I saw one. see pic

 

Here in SW, MO. I paid $200 each to install gears and lockers that I supplied at the time Rustys had the best price on Motive gears (same as I used in my race cars for years high HP w/transbrake) for under $500 including master install kits very good ones and all of them are not equal. They also installed an SYE for $250 99XJ D30 Chy 8.25 29 spline.


All work was done at a Jeep 4x4 Shop and old one.

 

That's a good price! I've priced a couple different shops and $250 was the cheapest around here. $300 per was more common when I was calling around.

 

Labor rates in my area are very reasonable for many things, even dealerships Hr. rates are lower than in larger cities in the state. I had to have some AC work done in Key West several yrs. ago on my Motor Home I found out about FL. labor rates then.


For your area that isn't a bad price either for $250 in 2017.

 

Agreed on the price being pretty good! The $250 is an indy shop local Jeep mechanic w/ a lift and garage in his backyard kind of out in the boonies a bit, so he has to charge a little less than the bigger shops to get people to drive out to him.

 

So I'm just curious... most everyone recommends going with 4.56's and 33's, even for lots of DD and Highway use. Based on the math, that's a little bit of over gearing. So just curious why people don't recommend 4.10's for 33's instead.

 

Majority of folks go with the lower set for a few reasons. Mainly because by that lift height and tire size, you've added heavy bumpers and accessories making the rig heavier. So the added "umph" helps push your rig along easier.

 

Definitely makes sense. Plus it's not like our XJ's are all that aerodynamic.

I already decided on 4.56's for my 33's a while back, but I'm thinking possible 35's. I think that's still a good middle ground for both sizes considering my XJ see's plenty of highway miles. Plus if I decide against 35's, I'll have that nice "umph" on the 33's.