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-   -   Color and # of stock Speedometer gear? Yellow 30? (http://www.wranglerforum.com/f282/color-and-of-stock-speedometer-gear-yellow-30-a-16497.html)

jonbugh 03-11-2008 01:39 PM

Color and # of stock Speedometer gear? Yellow 30?
 
I have a 1998 TJ 4.0 5-speed. Can anyone tell me what axle gears came standard in this truck? I was under the impression that they are 3.73, but I'm not sure. I just lifted the truck and put 35" tires on it. The speedometer gear that I took out was a yellow 30 and I put a black 29 in its place. The speedometer before with the yellow 30 speedometer gear and 30" tires was dead on when checked with my GPS, but now the speedometer is WAY off. When I'm going 65 according to the GPS, the truck is showing that I am going around 52.

Any help would be greatly appreciated!

Thanks!
Jon

distortedtj 03-11-2008 02:34 PM

look on your rear diff. on the left side of the diff cover should be alittle tag held on with the cover bolts... it'll tell you your gear ratio.. most likely you either have 3.07's or 3.73's

distortedtj 03-11-2008 02:47 PM

here's some pic's for you...

http://i182.photobucket.com/albums/x...r2/diff002.jpg

http://i182.photobucket.com/albums/x...r2/diff001.jpg


you can see where my says 3.73, yours should say that or 3.07

jonbugh 03-11-2008 02:58 PM

Quote:

Originally Posted by distortedtj (Post 204903)
here's some pic's for you...

http://i182.photobucket.com/albums/x...r2/diff002.jpg

http://i182.photobucket.com/albums/x...r2/diff001.jpg


you can see where my says 3.73, yours should say that or 3.07

Thanks! I'll check the tag as soon as I get back from working out.

Jon

jonbugh 03-11-2008 04:11 PM

Quote:

Originally Posted by jonbugh (Post 204917)
Thanks! I'll check the tag as soon as I get back from working out.

Jon

That's not what I wanted to see! I'm running 3.07's on 35" tires. No wonder it is a dog.

jonbugh 03-11-2008 04:31 PM

Does anyone by chance know the # of speedo gear that I will need for 3.07 and 35" tires until I can change the gears? I can't find it on the web...

Thanks!!!


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