How can I tell which gearing I have?
10-12-2009, 08:55 PM
#1
Member
Thread Starter
Join Date: Sep 2009
Location: Fresno CA
Posts: 135
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1988
Model: Cherokee
Engine: 4.0 (74,000miles)
How can I tell which gearing I have?
My vin tells me that I have a 88 xj 4.0 made in ohio,
but how can I tell what the gearing is?
Or which axels I have?
Any info?
thanks
but how can I tell what the gearing is?
Or which axels I have?
Any info?
thanks
10-12-2009, 09:14 PM
#3
MJ>XJ
Join Date: Mar 2009
Location: Griffin, G.A.
Posts: 17,836
Likes: 0
Received 4 Likes
on
3 Posts
Year: 1990
Model: Comanche
Engine: 4.0 I6
each have a tag... you axles should have a tag bolted on with the diff cover... they will tell you your gears... if you have a auto with a I6 then u probly have 3.55's... manuel... 3.07's... also search google for the pictures of your diffs... they will tell you what they are... your front is a Dana 30... your rear is either a d35, d44 or chysler 8.25... the D44 have a D shape to them with a steel drain plug on the diff cover... the other 2 are harder to explain and your better off looking at the pics...
10-12-2009, 09:18 PM
#4
CF Veteran
Join Date: Sep 2009
Location: West Valley
Posts: 3,612
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1998
Model: Cherokee (XJ)
Engine: 4.0
I found out the info your looking for two ways, asking lots of questions, and search on this forum, theres a ton of threads on axles here, search!. As far as OEM info, Email Chrysler and ask for a build sheet, they can tell you what the Jeep was shipped with, granted that does'nt tell you what mods have been done by PO's, but it's a good starting point. Then search and go from there.
10-12-2009, 09:19 PM
#5
Senior Member
Join Date: Jun 2009
Location: Central Pennsylvania
Posts: 670
Received 0 Likes
on
0 Posts
Year: 1989
Model: Cherokee (XJ)
Engine: 4.7 H.O.
Rear end is easy, D35 has 2.62 inch axle housing, 8.25 has 3.00 inch housing. All you have to do is get under it with a tape measure and measure the housing, close to 2 1/2 you have a 35, looks like 3 you have an 8.25. Not sure about the D44, never seen one stock in a jeep although I have heard rumors.
Your gear is most likely 3.55, unless you had a tow package, then it would be 3.73. An easy way to figure it out is lift the front, support it so the wheels can turn and it won't fall on you. Mark the driveshaft and tires and turn the driveshaft. just a touch over 3 1/2 rotations of the driveshaft for a full spin of the wheel is 3.55, almost 3 3/4 is a 3.73.
Your gear is most likely 3.55, unless you had a tow package, then it would be 3.73. An easy way to figure it out is lift the front, support it so the wheels can turn and it won't fall on you. Mark the driveshaft and tires and turn the driveshaft. just a touch over 3 1/2 rotations of the driveshaft for a full spin of the wheel is 3.55, almost 3 3/4 is a 3.73.
Last edited by sv41878; 10-12-2009 at 09:23 PM.
10-12-2009, 09:22 PM
#6
CF Veteran
Join Date: Sep 2009
Location: West Valley
Posts: 3,612
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1998
Model: Cherokee (XJ)
Engine: 4.0
The D35 also has a screw in plug where as the 8.25 has the lame rubber plug, apperantly an engineer having a brain fart that day!
Trending Topics
10-12-2009, 09:29 PM
#8
CF Veteran
Join Date: Sep 2009
Location: West Valley
Posts: 3,612
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1998
Model: Cherokee (XJ)
Engine: 4.0
My TJ had a 35, screw in plug, my two Cherokees with 8.25's both have had the rubber plugs, can you say leaky leaky! Not the best design.
10-12-2009, 09:40 PM
#9
CF Veteran
Join Date: Sep 2009
Location: West Valley
Posts: 3,612
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1998
Model: Cherokee (XJ)
Engine: 4.0
Anyway, back to the subject, I'd have to venture your running 3.55's. Obtain a build sheet, search rear end identification on this forum and go from there.
10-12-2009, 09:48 PM
#10
MJ>XJ
Join Date: Mar 2009
Location: Griffin, G.A.
Posts: 17,836
Likes: 0
Received 4 Likes
on
3 Posts
Year: 1990
Model: Comanche
Engine: 4.0 I6
Rear end is easy, D35 has 2.62 inch axle housing, 8.25 has 3.00 inch housing. All you have to do is get under it with a tape measure and measure the housing, close to 2 1/2 you have a 35, looks like 3 you have an 8.25. Not sure about the D44, never seen one stock in a jeep although I have heard rumors.
Your gear is most likely 3.55, unless you had a tow package, then it would be 3.73. An easy way to figure it out is lift the front, support it so the wheels can turn and it won't fall on you. Mark the driveshaft and tires and turn the driveshaft. just a touch over 3 1/2 rotations of the driveshaft for a full spin of the wheel is 3.55, almost 3 3/4 is a 3.73.
Your gear is most likely 3.55, unless you had a tow package, then it would be 3.73. An easy way to figure it out is lift the front, support it so the wheels can turn and it won't fall on you. Mark the driveshaft and tires and turn the driveshaft. just a touch over 3 1/2 rotations of the driveshaft for a full spin of the wheel is 3.55, almost 3 3/4 is a 3.73.
Thread
Thread Starter
Forum
Replies
Last Post
shadowmoses
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
8
09-30-2015 06:51 PM
xjcarolina
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
5
09-29-2015 08:43 PM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)