new lift

[91EX4x4]

There are a couple of ways to tell what your gear ratio is:
1. Look in your driver's doorjamb at the sticker with all the codes on it. Look up the code here:
http://www.therangerstation.com/Axles.html

2. Crawl underneath the back of your Ex and look for a metal tag attached to your axle. Clean it off and try to find the "code". If you have 3.73 open axles, the ratio "code" would read 3 73. If you have 3.73 Limited slip axles, the code would read 3L73. If you had, say, 3.27 open axles, the code wouls read 3 27, and so forth with the rest of the codes.

3. Jack up the rear of your Ex so both wheels are off the ground. *support it with proper jackstands* For every one turn of the tires, count the number of revolutions the driveshaft makes. If you can approximate the number of revs the driveshaft makes, you can get close to the axle ratio. Say, the driveshaft makes about 3 and 3/4 turns. Then you could pretty safely assume that you have 3.73 gearing. If, when you turn the tire, the other tire spins in the opposite direction, you would have open differentials. If they spin in the same direction, you would probably have a limited slip. The gear ratio is the number of turns of the driveshaft diveided by the number of turns of the tires.

If you need more help, just ask. If anyone has other methods or corrections, feel free to chime in.
-Rob

 

[ExplorerX91]

45 Open 8.8" 3200 3.55, i guess 3.55

 

[91EX4x4]

That means you would have 3.55 gears. You should probably go for some 4.10s or 4.56s especially if you plan on going to bigger tires in the future.

 

[ExplorerX91]

its going be freeway driven and daily driver so im thinking 4:10s, will 4:10s be enuff for 35s?

 

[udmsvt]

if you're thinking 35s, you should also be thinking solid axle...i wouldnt fo 35s on the TTB but regardless of which fron axle, you will want 4.56s or 4.88s...probably 4.56s for you because you are used to a lower gear ratio. with what you have right now, you could do 33s, it would be kinda similar to what i experience now, but you would have crappy mpg.

also keep in mind, for 35s, you are looking at either 6" in front and SOA in rear or 4" kit and 3" BL......mega bucks, plus its like 1300 to regear. when you do regear, keep in mind you want to prepare for the future yet not overstep now....if you did 4.56s now, at stock height, you would only hurt youself.