Interchangable transmissons

[OGCollard]

Long time since posted. You guys have always been awesome on info. Still trying to replace transmission. Have not given up. Looking to buy parts cherokee and swap tranny. What year xjs are interchangable with a 2000 xj for transmission?

[denverd1]

couple minor differences.
1987-1990, the AW4 had a 21 spline output shaft, a 1 pulse per revolution reed switch Output Speed Sensor, no Input Speed Sensor, and a 0.705:1 OD ratio. 4.0L and 2.5L transmissions are fundamentally the same, except for the torque converter and bellhousing, which are unique for each motor.
1990.5-1996, the AW4 switched to a 23 spline output shaft and a 0.75:1 OD ratio. It was no longer available behind the 2.5L engine. Otherwise, it remained exactly the same.
1997, the AW4 is exactly the same as the 1990.5-1996 units, except the electrical connector for the wiring harness changed. A simple cut and splice will solve this problem.
1998-01, the AW4 changed electrically, but is otherwise the same as 1990.5-1997 units. The Output Speed Sensor changed from a 1pps reed switch to a 4 pulse/rev variable reluctance pickup similar to the RENIX CPS and most ABS wheel speed sensors. A 16 pulse/rev Input Speed Sensor was also added. The ISS and OSS for these years are the same part number; one may be substituted for the other for spare parts purposes.

grab a 98-01 and bolt that puppy in

[OGCollard]

That was a ton of info! Thanks man. My simple mind read that and said to me to go find a 1998-2001 and that should work with little adjustment. Correct assessment?

[denverd1]

can't take credit for it, but there's more where that came from...

98-01 yup. others will fit with some electrical mods, but thats your best bet