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pretty confused about my gear ratio


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so i went and counted again i only spun the wheel once and got 1.75 rotations on the dshaft then multiplied 1.75 by 20 and divided by 10 i ended up with 3.5 i know this wasnt an available ratio. maybe sum1 knows what the ratio would be. its a 1990 4.0 auto short bed 4x4 d35 rear

maybe a 3.07?

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so i went and counted again i only spun the wheel once and got 1.75 rotations on the dshaft then multiplied 1.75 by 20 and divided by 10 i ended up with 3.5 i know this wasnt an available ratio. maybe sum1 knows what the ratio would be. its a 1990 4.0 auto short bed 4x4 d35 rear

maybe a 3.07?

3.55 was an available ratio, and in fact was the ONLY ratio offered with the 4.0L and automatic.

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What drivetrain is in your comanche?

the basic rules are this:

2.5L 5 spd-4.10

4.0 5 spd-3.07

4.0-auto-3.55

 

There are some exceptions, I have a pair of 3.73 geared axles under my junk, and the 2.5L with a 4 spd got 3.55.

Most likely if you've got a 4.0 and an auto it's 3.55

if you want to know for sure, take the cover back off, find all the numbers on the ring gear and then post them.

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I think 98% of the time would understatement, that was pretty much the exclusive for the auto on the manche and cheroke except for the few that got 3.73 and I am looking for a frontend with that ratio

 

looking for 3.73s, look for tow-package XJs, that was the towpackage ratio

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