Transfer Case Swap
CF Veteran
Joined: Jun 2009
Posts: 2,607
Likes: 446
From: Michigan
Year: 1987 MJ, 1973 J2000, 1986 XJ, 08 JK
Model: Comanche (MJ)
Engine: 4.0L H.O
^ my thoughts exactly
91 or 92 should be the crossover year. Atleast to your benefit if you have the larger spline count you will also be gaining the seal output shaft with that newer case
91 or 92 should be the crossover year. Atleast to your benefit if you have the larger spline count you will also be gaining the seal output shaft with that newer case
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Joined: Sep 2009
Posts: 3,495
Likes: 482
From: Glen Burnie, MD
Year: 2001
Model: Cherokee (XJ)
Engine: 4.0l
Close, thats for the 8.25 rear.
The Following is from from: https://www.jeepforum.com/threads/tr...-np242.685644/ <-- READ Tons of good TC swap info here.
There are 3 different input shafts, .750", .840", and 1.55", as well as both 21 and 23 spline shafts. All ZJ transfer cases have a 23 spline input shaft, and all 92-01 XJ's have a 23 spline input shaft. 91 and older XJ's have the 21 spline input.
Here's a general rule of thumb when determining your input shaft length. This is not always 100% accurate, so make sure you know what you have before buying a transfer case.
93-95 V8 ZJ's: 46RH transmission, 1.55" 23 spline input shaft
93-95 I6 ZJ's with the 42RE: .840" 23 spline input (with collar)
93 I6 ZJ's with the AW4 or AX15: .750" 23 spline input
All 96-98 ZJ's: .840" 23 spline input
All 96-01 XJ's: .840" 23 spline input
92-95 XJ's: .750" 23 spline input
91 and older XJ's: .750" 21 spline input
The Following is from from: https://www.jeepforum.com/threads/tr...-np242.685644/ <-- READ Tons of good TC swap info here.
There are 3 different input shafts, .750", .840", and 1.55", as well as both 21 and 23 spline shafts. All ZJ transfer cases have a 23 spline input shaft, and all 92-01 XJ's have a 23 spline input shaft. 91 and older XJ's have the 21 spline input.
Here's a general rule of thumb when determining your input shaft length. This is not always 100% accurate, so make sure you know what you have before buying a transfer case.
93-95 V8 ZJ's: 46RH transmission, 1.55" 23 spline input shaft
93-95 I6 ZJ's with the 42RE: .840" 23 spline input (with collar)
93 I6 ZJ's with the AW4 or AX15: .750" 23 spline input
All 96-98 ZJ's: .840" 23 spline input
All 96-01 XJ's: .840" 23 spline input
92-95 XJ's: .750" 23 spline input
91 and older XJ's: .750" 21 spline input
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