3,o7 to 3.55 gearing
#1
Newbie
Thread Starter
Join Date: Jan 2014
Posts: 12
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee
3,o7 to 3.55 gearing
so im finaly putting lift in the front and was going to just replace all the steering components and the axle since its got a deathwobble and the bearings are going out. but i looked and my axle is 3.07 and the other is 3.55. i use 4x4 daily so i cant just put the front on. my back axle is welded and i would like to keep it that way so could i just swap the spiders from mine to the 3.55 axle on the rear. is it a lot better to have 3.55. mines realy slow starting out with the 3.07.
#6
CF Veteran
Join Date: May 2013
Location: Asheville, NC
Posts: 2,562
Received 250 Likes
on
168 Posts
Year: 1999
Engine: 4.0
I'm confused. Is your truck a factory manual or automatic? You said one axle is 3.07 and one is 3.55 but which one? I can only assume since you noticed 3.07s when you were inspecting the front end, your front is geared as such. If that's the case, then someone swapped out the axle due to an accident and didn't know what they were doing. Your front and rear axle gearing need to be damn near matching for 4WD to work properly.
How are you using 4wd with mismatched gears? Regardless, it's easier to find a Dana 30 or Chrysler 8.25 with 3.55 gears and just swap it over than to replace all the spider gearing. Do that.
How are you using 4wd with mismatched gears? Regardless, it's easier to find a Dana 30 or Chrysler 8.25 with 3.55 gears and just swap it over than to replace all the spider gearing. Do that.
#7
CF Veteran
Join Date: Mar 2010
Location: Broward County Fl.
Posts: 47,923
Likes: 0
Received 22 Likes
on
22 Posts
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
I'm confused. Is your truck a factory manual or automatic? You said one axle is 3.07 and one is 3.55 but which one? I can only assume since you noticed 3.07s when you were inspecting the front end, your front is geared as such. If that's the case, then someone swapped out the axle due to an accident and didn't know what they were doing. Your front and rear axle gearing need to be damn near matching for 4WD to work properly.
How are you using 4wd with mismatched gears? Regardless, it's easier to find a Dana 30 or Chrysler 8.25 with 3.55 gears and just swap it over than to replace all the spider gearing. Do that.
How are you using 4wd with mismatched gears? Regardless, it's easier to find a Dana 30 or Chrysler 8.25 with 3.55 gears and just swap it over than to replace all the spider gearing. Do that.
Trending Topics
#8
Herp Derp Jerp
Join Date: Nov 2011
Location: Parham, ON
Posts: 18,251
Likes: 0
Received 12 Likes
on
11 Posts
Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
A 4.0L with 3.55:1 behind a stick is good to about 32s. More than that and you'll want to gear deeper again.
I believe the spiders have to come out in order for the side gears to move. So no, I don't think you can just swap the guts of the diff over to a new axle.
If you're going through all this trouble just get a lunchbox locker.
I believe the spiders have to come out in order for the side gears to move. So no, I don't think you can just swap the guts of the diff over to a new axle.
If you're going through all this trouble just get a lunchbox locker.
#9
Newbie
Thread Starter
Join Date: Jan 2014
Posts: 12
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee
I've been running 33s ever since I got the jeep and I always hated the gearing. Never used 5th gear. It manual. So i can't just swapp the spiders. So should I just run open open till I find a locker or have time to weld it.ps I have to drive threw fields on the way to school and almost got stuck yesterday 4low reverse for 5mnts thank god got me out
#10
Newbie
Thread Starter
Join Date: Jan 2014
Posts: 12
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee
thanks for the info guys so my rig sees alot of raod also and its been eating my tires. so should i go wth a limited slip locker.would i see a big difference between it and a welded rear end
#11
THE Admin
Join Date: Sep 2010
Location: Lantana, Fl
Posts: 34,036
Received 231 Likes
on
187 Posts
Year: 1996
Model: Cherokee (XJ)
Engine: 4.Slow
Yes. The Powertrax No Slip is a good choice for on and off road usage and drops right in without messing with the ring and pinion. A fully welded or locked rear will eat your tires.
#12
CF Veteran
Join Date: Feb 2010
Location: Cove, OR
Posts: 2,095
Likes: 0
Received 2 Likes
on
2 Posts
Year: 1993
Model: Cherokee
Engine: 4.0
88mud, a limited slip differential, and a locker are two completely different things.
A limited slip uses clutches or torque biasing gears to transfer some power to the tire with the most traction. Unless the clutches are wore out then they work just like an open differential.
A locker uses gears to transfer 50% of torque to each tire anytime you are driving in a straight line or when you're gassing it.
If I were looking for better traction and tire wear I would be going with a Lunchbox locker, cheaper than a LSD and better traction.
#13
Newbie
Thread Starter
Join Date: Jan 2014
Posts: 12
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee
88mud, a limited slip differential, and a locker are two completely different things.
A limited slip uses clutches or torque biasing gears to transfer some power to the tire with the most traction. Unless the clutches are wore out then they work just like an open differential.
A locker uses gears to transfer 50% of torque to each tire anytime you are driving in a straight line or when you're gassing it.
If I were looking for better traction and tire wear I would be going with a Lunchbox locker, cheaper than a LSD and better traction.
A limited slip uses clutches or torque biasing gears to transfer some power to the tire with the most traction. Unless the clutches are wore out then they work just like an open differential.
A locker uses gears to transfer 50% of torque to each tire anytime you are driving in a straight line or when you're gassing it.
If I were looking for better traction and tire wear I would be going with a Lunchbox locker, cheaper than a LSD and better traction.