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Old 09-02-2012, 02:01 PM   #1
thump16
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rear axle

what gears are standard for my rear axle and is it worth rebuilding or scrapping? There is nothing wrong with it but I have a newer rear to put under my truck.
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Old 09-02-2012, 03:00 PM   #2
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Re: rear axle

oops forgot to say its a 56 3100.
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Old 09-02-2012, 09:41 PM   #3
1project2many
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Re: rear axle

According to specs, trucks came with 3.90 or optional 4.11 gears. These axles do have some positive features but if you're looking for a more highway oriented gear it might be easier to swap to a different axle.
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Old 09-02-2012, 10:38 PM   #4
beanyard
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Re: rear axle

I redid mine with 3:90 gears but I have a Borg Warner overdrive.
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Old 09-05-2012, 10:43 AM   #5
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Re: rear axle

I also kept the 3.90 gears but I'm running a 16" truck wheel and plan to install an overdrive trans.
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