i’ve been searching for a couple of days but i’m still not sure if I understand the process of regearing yet ( i’m really new to jeeps and mechanical stuff )
I have a 96 xj with a 5 speed manual transmission
i swapped the rear axle with a ford 8.8 that has a ratio of 3.73
and my front d30 is 3.07 high pinon
So I can’t use the 4wd until I match the ratios ( new info to me sorry)
and i have a couple of questions

1- when i tried to order rings and pinions i found a set that’s reverse cut hp 3.73 that the vendor says its for the xj but it’s 26 splines so wouldn’t this be a problem? Isn’t all xjs 27 splines
2 - do i need to change the carrier going from 3.07 to 3.73 ?
3- if i get the ring and pinion and carrier those 3 parts will be enough to make the swap work or am i missing more parts that i need/failed to know about


any help would he highly appreciated thanks !

 

1. 26 is the number of splines on the Pinion Gear
2. There is a break between 3.55 and 3.73, so yes, you'll need a new carrier
3. You'll need a Bearing Kit. If you're wise, you'll replace the Axle Shaft Seals while you're in there. There's also a list of tools, and procedures, to installing these if you're intending to do the work yourself.

 

I highly recommend having someone do the work if you're not familiar with setting up gears. It's really tedious and easy to screw up, and very costly if you do it wrong.

If you're dead set on doing it yourself, it's best if you can find someone who has done it before to help walk you through, and if you can't find anyone, REALLY research on how to do it, and don't scrimp on tooling.

Yes, you can do it on your own, just looking out...don't want you to waste your time and money!

 

i will install it at a shop but i was wondering what parts to order , thanks for the advice !

 

You cleared so much for me I really really appreciate your explanation thanks !

 

Grab a front axle assembly from a junkyard. Grand Cherokee 94 to 98 with a V8. Bolt it in.

 

That is exactly what I did on my last swap. Cheap, easy and quick. The only down side is that its a low pinion axle.

 

for rock crawling..

 

exactly this, deal breaker for some - all about your intended use and preference when it comes to the argument of ye or ne.

If you have a local shop that will do the regear for you, it wouldn't hurt to stop in with the same approach you have done here. Clearly explain your setup and what your trying to get done, if they dont pitch their work and price well enough at the very least you could get them to order the gearset, carrier and install kit needed to do the job yourself. Potentially even get the guidance on the tools needed to do the job.

Now if the shop just turns their nose up to these requests then id say you've found a place not to support with your business.

 

Put 31 tire in front with stock 29 tire at the back, the 3.07 / 3.55 gear will offset the different size wheel diameter


*** No, don't do it!