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Very slight difference in F&R gear ratios?

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Old Apr 16, 2013 | 06:46 PM
  #1  
bighouts5591's Avatar
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From: State College, PA
Year: 1995
Model: Cherokee
Engine: 4.0 I6
Default Very slight difference in F&R gear ratios?

I'm about to swap to a full width d44 and ford 9" setup, however looking at gears for the 9" I see they come in different ratios than the 44. Is it a big deal to run say, 5.13s in the front and 5.14s in the rear? I don't think so, right?
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Old Apr 16, 2013 | 06:51 PM
  #2  
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From: shawnee,ks
Year: 1993
Model: Cherokee
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No just don't use 4wd on road (shouldn't anyway)
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Old Apr 16, 2013 | 06:54 PM
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From: Tx
Year: 2001
Model: Cherokee
Engine: I-6
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I was going to say i've seen fords with 3.54 gears in front and 3.55s in the rear.
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Old Apr 16, 2013 | 06:55 PM
  #4  
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From: McDonough, GA
Year: 1998
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You should be alright
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Old Apr 16, 2013 | 07:09 PM
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From: Dalton, MA
Year: 1998
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Won't matter a bit, they're essentially the same gear ratio
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Old Apr 16, 2013 | 07:15 PM
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From: Soddy Daisy TN
Year: 97
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It's actually pretty common and not an issue as long as they're close. On my buddy's TJ which has those same axles his front has 3.55s and the rear has 3.50s and they work fine.

Last edited by xjmarc; Apr 16, 2013 at 07:18 PM.
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Old Apr 17, 2013 | 01:48 AM
  #7  
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From: SoCal
Year: 1994
Model: Cherokee
Engine: 4.0
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I don't think there is any difference at all except the way they rounded. There aren't that many plausible combinations of pinion tooth count and ring gear tooth count.

Can you find documentation (or just count them if they have the cover off) on the two tooth counts?
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Old Apr 17, 2013 | 03:59 AM
  #8  
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From: S.Jersey
Year: 1999
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puttem in, u'll be fine. its not enough of a difference to worry about it.
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Old Apr 17, 2013 | 08:16 AM
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From: oregon
Year: 1993
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That small of a difference is hardly even measurable. you wont even notice it
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Old Apr 17, 2013 | 03:01 PM
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From: Yorba Linda
Year: 2001
Model: Cherokee
Engine: 4.8
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There are some ratios that have a large difference IE 5.38 (D60 or D44) and the matching F9 5.43. even this is a acceptable "match".
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