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Old July 7th, 2007, 03:38 PM   #1
milwaukeemud
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Question I have numbers I still dont know

I found numbers on my rear end housing Can someone help me figure out what I have in it 14055251 and 6m34 it's a 84' Burban 1/2 ton 350 sbc
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Old July 7th, 2007, 05:04 PM   #2
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well the long one is the part number for the axle assemblly most likely. run it past a GM parts locator and see if it comes up with an axle ratio.
the 6m34 is most likely the casting number.
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Old July 8th, 2007, 11:31 PM   #3
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What are you trying to figure out? You don't know what axle it is?
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Old July 9th, 2007, 07:28 AM   #4
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that number i dont think is a BOM number it doesnt come up with any thing
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Old July 9th, 2007, 07:55 AM   #5
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Quote:
Originally Posted by milwaukeemud View Post
6m34

Did you find that on the passenger side of the housing? Look at it again and tell us if that "6" could be a "G", meaning its "GM34". If so, I will say its probably the "GM3" RPO code, which is 3.42's.
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Old July 9th, 2007, 10:25 AM   #6
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it is the letter G it was on the passanger side on the front of the housing it was stamped upside down and the long number is on the right.well this tells me alot more then I knew like I said all the stickers and tages are gone.dose that mean the front is 3.42 then?
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Old July 9th, 2007, 10:32 AM   #7
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it is the letter G it was on the passanger side on the front of the housing it was stamped upside down and the long number is on the right.well this tells me alot more then I knew like I said all the stickers and tages are gone.dose that mean the front is 3.42 then?
Front and rear axle ratios are always supposed to match. There is no reason for them not to match unless the previous owner did an axle swap and was a cheap-ass or lazy.

Do you have any reason to believe that they are not the same ratio? Was the front driveshaft not installed when you bought it or something?
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Old July 9th, 2007, 11:13 AM   #8
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it was all up and running when I got it the metal tag that bolts to the cover was missing so that atleast tells me the cover was removed for some reason it dosn't have a LSD I tested that so maby it had service or just a diff oil change Ive been trying to find out what it had so I could put a LSD in or atleast rebuild the one in it which I believe it dose not have.Im sure the person that did the lift was a cheap-ASS with the lift he did
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Old July 9th, 2007, 11:18 AM   #9
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You keep referrring to metal tags on the covers, but IIRC only Dana did that. You don't have Dana axles. Its a 10-bolt/12-bolt combo? Those were made by AAM.
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Old July 9th, 2007, 11:24 AM   #10
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ive seen the metal Id tags on diffs before so I assumed that they all had them yes it's just a 10 bolt but if that what it has for gearing im a little happy thatnk for the help everyone
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