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Very slight difference in F&R gear ratios?

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Old 04-16-2013, 06:46 PM
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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?
Old 04-16-2013, 06:51 PM
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No just don't use 4wd on road (shouldn't anyway)
Old 04-16-2013, 06:54 PM
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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.
Old 04-16-2013, 06:55 PM
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You should be alright
Old 04-16-2013, 07:09 PM
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Won't matter a bit, they're essentially the same gear ratio
Old 04-16-2013, 07:15 PM
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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; 04-16-2013 at 07:18 PM.
Old 04-17-2013, 01:48 AM
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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?
Old 04-17-2013, 03:59 AM
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puttem in, u'll be fine. its not enough of a difference to worry about it.
Old 04-17-2013, 08:16 AM
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That small of a difference is hardly even measurable. you wont even notice it
Old 04-17-2013, 03:01 PM
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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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