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Thread: Rear end ratio

  1. #1

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    rising sun indiana
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    1991 Dodge Ram 50
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    I.D.K.?

    Rear end ratio

    Hi, new member here, glad to find this site! I have 1991 dodge ram 50 2.4 engine 5 speed, trying to figure out standard gear ratio for rear end? Any info would be appreciated! Thanks Jeff

  2. #2



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    Vacaville, CA
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    1989 Mitsubishi Mighty Max
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    4G63-T
    Most came with 3.909, but some did come with 3.454 and 4.22. There us a tag on the firewall that will tell you your rear end gear ratio

  3. #3

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    1991 Dodge Ram 50
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    I.D.K.?
    Thanks , does tag on firewall need to be decoded or does it state actual rearend ratio? Thanks Jeff

  4. #4

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    1991 Dodge Ram 50
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    I.D.K.?
    Quote Originally Posted by DroppedMitsu View Post
    Most came with 3.909, but some did come with 3.454 and 4.22. There us a tag on the firewall that will tell you your rear end gear ratio
    Thanks , does tag on firewall need to be decoded or does it state actual rearend ratio? Thanks Jeff

  5. #5

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    Kansas City, MO
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    1992 Mitsubishi Mighty Max
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    6G72
    This is for a 3000GT, but the format is the same for the trucks.



    You want the 3rd line where it says transaxle. This example has a W6MG1 transmission, and a 3.307 rear axle.

    That tag on my 1992 4x4 says V5MT1 4222. So it's a V5MT1 trans with a 4.222 axle.

  6. #6

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    1981 Mitsubishi L200
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    Other
    If there's no tags or you think it might not be original you can Jack the rear end up and turn the driveshaft and count the number of times the wheel turns
    Use something to mark the tyre and spin the shaft 10 times for more accuracy

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