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Old August 1st, 2005, 02:05
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woody woody is offline
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Join Date: May 2002
Location: NC Sandhills
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What transmission do I have?

The following manual shift and automatic shift transmissions were offered on the various XJ/MJ models throughout the production run:

Manual shift:

Asin-Warner AX5:
5-speed in 2.5l I-4cyl models 84-89/90. External slave cylinder. 21-spline output shaft. 4.10:1 axle gear ratio.
Gear Ratios: (1) 3.93:1 (2) 2.33:1 (3) 1.45:1 (4) 1:1 (5) 0.85:1 (R) 4.74:1

Asin-Warner AX15: 5-speed in 90-00 4.0l I-6cyl and 2.5l I-4 models. Earlier versions use an internal slave cylinder, which changed to an external slave cylinder sometime in the mid 90s. 23-spline output shaft. 3.07:1 axle gear ratio.
Gear ratios: (1) 3.83:1 (2) 2.33:1 (3) 1.44:1 (4) 1:1 (5) 0.79:1 (R) 4.22:1

Peugeot BA10/5: 5-speed in 87-89 4.0l I-6cyl models. Internal slave cylinder. 21-spline output shaft. 3.07:1 axle ratio. This transmission is easily identified by its two-piece case… the case halves split horizontally, and there will be an obvious seam along the top & bottom where it bolts together.
Gear ratios: (1) 4.03:1 (2) 2.39:1 (3) 1.52:1 (4) 1:1 (5) 0.72:1 (R) 3.76:1 (*per AMC/Jeep manual 8980 010 302 publ. 03-86)

New Venture 3550: 5-speed in 00-01 4.0l I-6cyl models. External slave cylinder. 23-spline output shaft.
Gear ratios: (1) 4.01:1 (2) 2.32:1 (3) 1.4:1 (4) 1:1 (5) 0.78:1 (R) 3.57:1

Automatic shift:

Chrysler 904:
3-speed in 84-86 2.8l V-6 models. Mechanically controlled shifting.
Gear ratios: (1) 2.74:1 (2) 1.55:1 (3) 1:1 (R) 2.20:1

Asin-Warner AW4: 4-speed in 4.0l 6cyl models 87-01. Electrical (solenoid) controlled shifting. 21-spline output 87-89, 23-spline output 90-01. 3.55:1 axle ratio.
Gear Ratios: 21 spline: (1) 2.8:1 (2) 1.53:1 (3) 1:1 (4) 0.7:1 (R) 2.39:1
23 spline: (1) 2.8:1 (2) 1.53:1 (3) 1:1 (4) 0.75:1 (R) 2.39:1

Last edited by woody; November 19th, 2008 at 03:05. Reason: revised BA10/5 ratios 11-19-08
 


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