Gears

mtx11 · Apr 3, 2010

I currently have 3:55 gears but the 5.2 dogs up hills pulling a 17ft bass boat. I also have 275 55r20 tires on the durango too. What gear would be best?
And any truck with this the specific gear that
maybe at a scrap yard

Snowrider17 · Apr 3, 2010

im pretty sure you can find durangos with 3.92's in them. other than that i would think you have to buy an aftermarket set...

qtipextra · Apr 3, 2010

As snowrider stated, you can find stock axles with up to 3.92:1 ratio. However, for your towing, I would recommend going with 4.56:1 (Available aftermarket only).

You cant find "other trucks", as the gears need to fit the Chrysler rear end that you have. And you most likely have the Chrysler 9.25" rear end (You can check by looking at the rear of your vehicle, down on the differential cover. If it has 12 bolts around it, its the 9.25", otherwise its the 8.25").

Keep in mine however that a gear swap is EXPENSIVE. Your looking at $400-700 Per axle (parts and labor). If you have a 4X4, you will need to do the front in addition to the rear, doubling the cost, so about $900-1500 total (parts and labor).

mtx11 · Apr 3, 2010

If I do it myself and get the gears from the junkyard is it still expensive.
How do I tell if it has 3:93 gears

02roadtrack · Apr 3, 2010

there will be a tag on one of the lower right bolts on the diff cover, the one on my truck has 3.9 which is 3.92. This tag is approximately 1" by 1/2". Other than that check the order codes. And if you find axle and centersection at junkyard. I would suggest sticking the complete units under your rather than swap gears. If they are good. It would be faster and easier.

RebelX · Apr 3, 2010

actually if your towing. get the 4.10's. not much difference between them and the 3.92's. just a lil more low end torque.

mtx11 · Apr 4, 2010

Would gears out of a ram 1500 work. Seen a salvage yard they have 4:10 out of a ram for 85 dollars

caulk04 · Apr 4, 2010

As long as the rear axle is the same, yes, the gears can be used in your housing. Judging by your questions, I don't think swapping the gears is a job you can do (no offense intended).

mtx11 · Apr 4, 2010

I wouldn't think I can do it either but saying I can't would just be me paying me paying some $$ to do It. Shit I new nothing about tube amplifer and can build one now. 400volt dc is prolly alot hard to mess with hay feeler gauges.

So if I get a used set of 410 , I would need new bearings , crush sleeves seals ? The secial tools are feller gauges , dial indacator ( I new a guy indacator hahaha) any thing else.

Little Blue Guy · Apr 4, 2010

Beer?? :beer:

caulk04 · Apr 4, 2010

Yikes, that was an adventure to read.

Master install kit will include the bearings, seals etc that you need. You'll need an indicator, in/lb beam type torque wrench, high torque impact gun (for crush sleeve) and so forth. Basically, if you have none of this stuff and don't plan to go a gear job again, it'll be just as cheap to have someone else do it...easier too.

mtx11 · Apr 4, 2010

I got all that stuff but the indicator. Well see what happens I will check my tags on my axle in the afternoon .

papnschmilees · Apr 4, 2010

also you can check the glove box. mine has a sticker in it with some options listed. it says on there that I have thw 9.25 rear LSD with 3.55. also unlike what 02roadtrack said, my sticker/tag that is on the axle is actually on the forward facing side of the axle tube. If I can remember right it was on the passenger side axle tube.

fastdurango00 · Apr 4, 2010

well, if you have the lsd, i would just do a gear swap so you dont lose the lsd.. and, if it were me,i would just pay someone to do it, only because then i know that if its not done right, its not my fault, and somebody will have to fix it for free........... just my.02

RebelX · Apr 4, 2010

if your rebuilding on your own. expect to spend several hours doing it. i did mine 3weeks ago. put all new bearings in. i think i spend 8hrs doing it. after snapping my bearing puller in half, lol.

Snowrider17 · Apr 5, 2010

i would NOT even attempt to do a gear swap if you have never done it before i dont care how mechanically inclined you think you are... and there is little differance between a 3.92 and 4.10 i would not buy two sets of new 4.10's when i could get both front and rear housings for half the price. i would say find yourself a set of 3.92's and throw the axles under your truck and call it a day.

RebelX · Apr 5, 2010

swapping axles isn't that easier either. especially the front since its basically a 3piece system. 2 cv shafts and the main casing.

not to mention all the stuff you have to disconnect to pull the front axle setup out.

price both and see which is cheaper. a good used rear axle from a auto salvage yard is going to run about 600-1000. i know, i priced some when i had my rear go out. not sure on the front.

new gears are about 200-300, figure roughly 500-700 for a shop to change the rear gears out also.

mtx11 · Apr 5, 2010

I don't agree with if you never done gears before have someone else do it. How do you learn? You always do things you never done before? How did that shop learn how to do it ?

As said the front diff would be a pain to put out plus the to swap my new ball joints in there. Tear out most of everything. But I would assume as long as you get that tooth pattern right then you should be good.

02roadtrack · Apr 5, 2010

I've redone axles before. 2 things you need, patience and somebody with experience. Tear down is easy. But there are parts that if not set correctly you literally need a new part. Pretty precise measurements, and you will more than likely half to tear it apart a dozen times. It would be easier and probably cheaper to get a donor set. But if you want to learn, hope you have a good mechanic for a friend. You definitely don't want to try to do it yourself without experienced guidance. I swapped out a set on my dak before I traded it for r/t. Still cuss alot on front, but didn't have to think nearly as much. Or just compromise. Swap the rear axle, rebuild front. Rear shouldn't take more than an hr I would expect( if eveything goes well). I've never tore into a front axle, but don't buy one with a decent front hit. Aluminum housing, I would expect it to be easily broken(i broke my housing, broke the pinion and housing completely apart). Another thought, if your rig isn't awd you can swap the rear axle with an axle loaded with whatever gears you find and see how you like it. Don't use 4x4.

A good shop would have sent at least one guy to training at least.

Snowrider17 · Apr 5, 2010

only thing i ment is if you have never done it and dont have someone with you when you do it that has done it before... you dont wanna ruin a 250+ set of gears. your call... but im sure if you shop around you could prob get a set of both front and rear axels for less than 600 with 3.92's and i would rather tear the front done and put the new one in than set gears. its not that hard.

Gears

mtx11

Snowrider17

qtipextra

mtx11

02roadtrack

RebelX

mtx11

caulk04

mtx11

Little Blue Guy

caulk04

mtx11

papnschmilees

fastdurango00

RebelX

Snowrider17

RebelX

mtx11

02roadtrack

Snowrider17

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