Gearing Identification

[Raleighjeepguy]

Okay so I'm trying to get an order in for some gears for my 8.8. I think the jeep is currently geared but I dont know whether it has 4.88 or 4.56


How can I tell?

[Hewittrd]

If you open the differential, it should be printed on the ring gear.

[Raleighjeepguy]

thats what I was hoping to hear but didnt wanna pull the cover if it wasnt

[Joe Dillard]

You don't have to pull the cover to know what ratio it has.

There's at least 2 very simple ways to tell & if you'd like to know what those are, just say so unless you just want to pull the cover.

[Raleighjeepguy]

naw I'll take a nicer way if you wanna share

[Joe Dillard]

Take a look at the differential cover. Attached to one of the cover bolts the factory attaches a tag with the ratio stamped on it. If it's missing try the other option.

You can see the tag in this old pic of mine.
http://www.fototime.com/881302048678764/standard.jpg

Or, go to this website & look at the third FAQ down.
http://www.differentials.com/faq.html

[RobotturkeyYJ]

This forum has about 40 or 50 posts about this just search for "gear ratio" and here is a link to one,take it easy:thup2:

http://www.jeepsunlimited.com/forums/showthread.php?t=819497&highlight=gear+ratio

[Shadly1]

Hey, just do what I did when I was in auto shop class... Count every tooth on the ring and the pinion and divide the big number by the little one.

[Raleighjeepguy]

specified that it wasn't factory gearing. lol

[Raleighjeepguy]

did the wheel test and got 4.56


these #'s were on the outer gear 8 0498 dana d 42721 p8l286a 41 9

Wtf?

and this on the carrier 71110-6 and an 85

should I trust the turn test or try and find out what these #'s mean