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Old 08-21-2011, 07:27 PM   #1
67 DREAMING
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Ring gear id numbers

I have some numbers maybe you guys can decode for me i have a 1991 chevy 4x4 z71 trying to determin the gear ratio the id tag in the glove box is obliterated and caint tell what anything says on it so i dropped the cover on the rear end and heres the numbers that i found on the ring gear 3984831 12 41 g.m.k
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Old 08-21-2011, 08:23 PM   #2
gmtec93c1500
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Re: Ring gear id numbers

if you got the cover off count the teeth on the ring gear
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Old 08-21-2011, 10:37 PM   #3
loudnlifted88
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Re: Ring gear id numbers

type your vin number in the box on http://www.compnine.com/vid.php, that will give you every option your truck had from factory
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