Blkjk07

how would I find out my gear ratio? 2007 wrangler x, doesnt have a hitch or tow pakage.

jsears

Mine are 4.10s with the same options.

jeep_creep

Is it auto or stick the auto has 3.73 and the manual has 3.23 or if it has the tow package it will also have 3.73 gear ratio

nthinuf

Could be 3.21, 3.73 or 4.10. Either check you build sheet, if you still have it. Or give your VIN to the dealership or send it in and ask them, or go out to compnine.com and enter your vin in the research area. Or...

Mark a rear tire and the driveshaft, lift a rear tire, spin the tire two full revolutions, and count driveshaft revs.

wayoflife

more than likely, you have 3.73's but, as mentioned, you can always figure it out by marking your tire and drive shaft and then roll your jeep forward or back. if the drive shaft spins just short of 4 revolutions after one rotation of your tire, you have 3.73's. if it's just a tad more than 3, you have 3.21's

pwain

You can also go to the Jeeps website and request a buildsheet. I did this a couple months back for a 1999 TJ we picked up and recieved a response in less than 24 hours.

glwood6

Wouldn't the differentials also have a small metal tag that has the gear ratio stamped on it?

TURTLECON

Do you have a front d44 or d30?

ronjenx

As usual, this question brings on all kinds of guesses, some of which are ratios not offered at the time of manufacture.

Build sheets are no more than a guess if you bought the Jeep used.

If you are handy at all, you can try this:

Chock the front tires, fore and aft.
Put the transmission in neutral.
Emergency brake off.
Jack the left rear tire off the ground.
Put a jack stand under the frame, just in case the jack fails (had to add this).
Put an index mark on the aft end of the drive shaft, visible from the left rear wheel.
Put an index mark on the left rear tire at the 6 o'clock position.
Rotate the left rear tire 2 complete revolutions while counting how many times the index mark on the drive shaft passes its original position.
That number will be your axle ratio.
Remove jack stand and lower jack.
Put transmission in gear or Park, apply emergency brake.
Remove chocks.
If you have limited slip, jack up both rear wheels and rotate one revolution, making sure both tires rotate equally.

If the drive shaft rotated almost 3 1/4 turns, you have 3.21
If the drive shaft rotated almost 3 3/4 turns, you have 3.73
If the drive shaft rotated a little over 4 turns, you have 4.10
If the drive shaft rotated a little under 5 turns, you have 4.88
If the drive shaft rotated a little over 5 turns, you have 5.13

tljk2007

I had the same ? a while back.Just enter vin# http://www.compnine.com/index.php?res=1