[trooper Tdiesel]

found some info worth posting very detaled!!

Tracker and Sidekick Gear ratios
Models listed oldest to newest, per ratio.
Vitara, Grand Vitara, and XL-7 ratios will be listed elsewhere to simplify this chart
4.30X:1 Non overdrive 2 dr auto 1.6L 16v
4.625:1 2dr auto 1.6L 8v
4.88X:1 Listed elsewhere in the Vitara section
5.125:1 Most all 4dr's (Non Vitara) * Most all 5-speed Track Kick's * Most all Autos with overdrive

5.38X:1 Early model 1.6L 8v 4dr 5-spd Track Kick's (RARE)
5.63X:1 The early 1988-1989 1.3L powered Track Kick (RARE)

skyhiranger:
I have seen several posts asking about what a certain year combo would have, so I made up this list. Hopefully, it is easy to interpret.

This list is for finding the factory axle ratio in North American (US and Canada) 89-98 Trackicks, based on year, body style, engine and tranny combo. As far as I know it is 99.99999999% accurate. There may be some oddball combos out there, and there may be variations to this list in non-North American models, but the list is correct, to the best of my knowledge, for all North American models.

89-98 Trackick gear ratios
Years....2 or 4 door...Engine type...Transmission...Axle ratio
89 2 1.3L carb. 5 speed man. 5.625
89-95 2 1.6L TBI 5 speed man. 5.125
89-95 2 1.6L TBI 3 speed auto 4.625
91 4 1.6L TBI 5 speed man. 5.375
91 4 1.6L TBI 3 speed auto 4.625
92-98 4 1.6L MPFI 5 speed man. 5.125
92-98 4 1.6L MPFI 3 speed auto 4.30
92-98 4 1.6L MPFI 4 speed auto 5.125
94-98 2 1.6L MPFI 5 speed man. 5.125
94-98 2 1.6L MPFI 3 speed auto 4.30
94-98 2 1.6L MPFI 4 speed auto 5.125
96-98 X90 1.6L MPFI auto or man. 4.625

4.30 gears have a 10/43 tooth count
4.625 gears have an 8/37 tooth count
5.125 gears have an 8/41 tooth count
5.375 gears have an 8/43 tooth count
5.625 gears have an 8/45 tooth count

I have personally verified (removed and counted) every combo on the list, except for the 89, 2 door, 1.3L, 5 speed, 5.62 combo and the 91, 4 door, 8V, auto, 8V, 4.625 ratio......but they have been verified by people who have actually removed the ratio from the listed combo.

cj:
FYI in case you come across or are looking for the following and want to confirm them

4.875 gears have a 8/39 tooth count
5.833 gears have a 6/35 tooth count (Calmini)

so in my case, i have 5.12s