xjallseasons

So I have a 96 4 door with 150k. It has a 3.5" lift with 33's, d30 and 8.25. No aftermarket gears and has lunchbox lockers. Money isn't tight but I could use it elsewhere.

Here is my predicament: I want to switch out the front d30 for a d44 full width and the 8.25 to a ford 9" full width with disc brakes. But is this all necessary? I can buy all the kits to make this work and know it will be bad *** when its complete.

I have done some serious rock crawling up some steep waterfalls and haven't broken anything. I know there are weak points on both axles. But also I haven't done any serious rock crawling in about 5 years and would like to just stick to trails.

I was thinking that if I didn't spend the money on switching the axles then I could spend it on 4.56 gears and selectable lockers and other areas on the XJ. Will I regret not building some beefy axles or not worry about it since they have held up so far?

00t444e

If you are only running 33s I would keep the stock axles, the Dana 30/ Chrysler 8.25 combo has proven to be strong enough for 33s. I wouldn't swap axles unless you plan on running 37s or larger.

esteem

I agree. Unless you want to run bigger tires or tougher trails, what's the point? And if money is at all a concern, run what you have until it breaks. Then upgrade.

JeepXJExpo

Agree with the others but I've been in your shoes......


If you know 100% you're staying with 33s, then put a bit more into your axles now with gears and such and chromoly shafts and you'll be good.



I first built up my HP30/8.25 for 35s and it did awesome for years, but moving to 37s now and currently in progress on the HP44/9" swap, both of them being heavily built axles.

xjallseasons

Thanks Expo and everyone else. I don't think I would go bigger than 35's. I have an opportunity to take the 35's off my buggy and put on 39 BFG's from a baja race. They are lightly used. Now what do I do with the 35's? Sell the 33's with wheels and buy 17's to put the 35's on. Now I definitely have to modify my axles and get a taller lift. That was the reason for my question.

Hey Expo, what sort of upgrades did you do to your 30 and 8.25?

xjallseasons

What do you guys think of keeping lunch box lockers and adding different gear sets? Since I am going to keep with the axles and since they have the lunch box locker what's the point in spending $1200 plus $'s on selectable lockers. If I do decide to switch to selectable lockers, it shouldn't be a big deal right?

JeepXJExpo

Switching from lunchbox to selectable is not a small project and you need to know what you're doing since you'll need to remove parts, like the carrier in a front axle, and will need to be able to re-measure and set gears. But there is nothing wrong with running lunchbox style lockers. Gearing is going to be super important if running 35s though so you'll at least need to change those out.



In my axles, which I still have and am selling but they aren't under the Jeep anymore, I had the HP 30 front with chromoly shafts, 4.56 gears, an Aussie locker and other goodies, like Alloy USA ball joints, 1 ton over the knuckle steering, etc.



The rear was a 29 spline 8.25 also with chromoly shafts and a Powertrax in the rear.



The setup worked amazing and never failed me. Good luck with your mods and whatever direction you decide to go!

00t444e

That would be fine I am going to keep my Spartan lockers when I do a gear change, you will need a different carrier for the Dana 30 since it has a carrier break at 3.73.

JeepXJExpo

Yeah I had to change my carrier in the 30 when I re-geared.

Freerider15

I'd keep your 8.25 and D30 for now. If you do decide to step up to 35's or larger, you could always acquire the axles and start building them on the side.

One thing, your rig is a 96', the 8.25 transfer year between 27 and 29 spline.

If it's 29 Spline, you're good to go.

27 Spline and I'd work on getting something else in.

2drx4

If you're going to stay under 35s, I'd just run the stock axles, but I'd recommend sticking with 33s and not trying to push it with 34s... Although, as said check if that's a 29 spline 8.25 and ditch it if it isn't.

IMHO the work to swap a D44 front in is not worth the rewards. The D44 swap is a fair amount of work and cost, yet is a marginal or non-upgrade in many aspects.