How to find rear end gear ratios??? - Ranger-Forums - The Ultimate Ford Ranger Resource


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Old 12-10-2008
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How to find rear end gear ratios???

I have 1999 ford ranger sport and i was wondering how i would find the rear end gear ratio with out opening up my rear end?
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Old 12-10-2008
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Should be a tag on the axle
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Old 12-10-2008
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Also check the driver's side door jam for the axle code.
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Old 12-10-2008
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Quote:
Originally Posted by OTRtech View Post
Also check the driver's side door jam for the axle code.
This

and then look here

http://www.therangerstation.com/tech_library/Axles.html
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Old 12-10-2008
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Or you could just look here:

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Old 12-10-2008
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^^ damn you beat me to it you keep doing it lol
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Old 12-11-2008
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kool thank everyone
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Old 12-11-2008
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What if your door jam sticker ain't there?? Mine was scratched off when I got the truck.. Don't know why, it's caused me a pain in the @$$.
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Old 12-11-2008
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Theres a tag on your diff, I'll grab a pic of how to decode it later. I'll shoot you a PM about it
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Old 12-11-2008
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or you can jack the rear up, turn the tire one full turn and count the revs of the drive shaft. It'll give a close-enough measurement to assume a stock gear ratio.
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Old 12-11-2008
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Where on the diff would the tag be located? (pic?) Hopefully it didn't get removed either...
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Old 12-11-2008
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It will be attached to one of the bolts
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Old 12-11-2008
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a bolt on the diff cover. can't miss it.
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