Transfer case gear ratio -
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back > General Technical Discussions > Engines & Drivetrain > Transfer case gear ratio

Ring & Pinion's, Lockers, 4340 Axles, Install Kits, BaRockridge 4WD IS Taking Zone Offroad Suspension Lift Kits Engo winches available at! Free shipp

Unread 10-06-2012, 11:42 AM   #1
Registered User
1998 ZJ 
Join Date: Oct 2012
Location: Salisbury, NC
Posts: 4
Transfer case gear ratio

I have a 98 Grand Cherokee 5.2L. The front and rear ends are both geared 3.73 where the transfer case is geared 2.72. Should the transfer case be geared the same? In 4lo the Jeep do not move it just grinds! Any help will be appreciated!

pinky38 is offline   Reply With Quote
Unread 10-06-2012, 12:47 PM   #2
Registered User
1995 ZJ 
Join Date: Dec 2010
Location: Norman, OK
Posts: 2,006
It does not matter what the t-case ratio is in respect to the axle ratios, thats just where you get another reduction from "low range". In high range the t-case is a 1:1 ratio, meaning the input speed is the same as the output speed, in low range the input speed is 2.72 times faster than the output speed.

If it grinds in 4low you either have something broken inside the t-case or the shift linkage is out of adjustment and its just not getting fully engaged into 4low. I would want to assume the shift linkage is out of adjusment, there is an adjustment rod/pinch bolt under the Jeep infront of the t-case right beside the trans on the drivers side. I would loosen that bolt and slide the linkage a little bit to see if that helps.
jnicewan is offline   Reply With Quote

Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. is not in any way associated with Jeep or the Chrysler Corp.