1999 TJ Sahara Tranny - Jeep Wrangler Forum
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Old 11-09-2018, 09:01 PM
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1999 TJ Sahara Tranny

Guys I need to know to what automatic transmission I can swap my AX15 to in order to have more gears since mine only have 3 and the revs are always around 3k when I'm going at 65 or 70. I'm running 35s with a 4.88 gear ratio.Any advice would be appreciated.

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Old 11-09-2018, 11:29 PM   #2
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I'm a little confused by your post. I currently run 33s and 4.88 gearing on a 1999 Sahara w/an AX15 manual. I have 5 gears and run about 2600 RPM at 65 mph in 5th gear.

I'd think if you're running 35s with the same gearing you'd be running at less RPM. However, I don't get your comment on having 3 gears.

Please elaborate.

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Old 11-10-2018, 07:43 AM   #3
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All ax-15 have 5 forward gears
The stock 99 auto, which is not an ax-15 manual tranny, has only 3

No easy swap toget4 spd auto
A xj auto is most feasible but requires extensive wiring for TCM and is longer and runs hot but it is a very reliable auto that bolts to the 4.0 and has overdrive


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