Author Topic: Help with codes on a 12 bolt rear end  (Read 6806 times)

Offline CA76K10

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Help with codes on a 12 bolt rear end
« on: November 02, 2018, 09:22:15 PM »
Having trouble figuring out my rear axle. 12 bolt with the following markings...TBH(or TRH?) W217 2 on pass axle tube,  CN2 and H 2 2 on back driver side casting and finally GM58 and 3896839 N on the front of the casting. Any help is appreciated!
« Last Edit: November 02, 2018, 09:50:58 PM by CA76K10 »

Offline CA76K10

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Re: Help with codes on a 12 bolt rear end
« Reply #1 on: November 02, 2018, 09:24:52 PM »
Having trouble with photos
« Last Edit: November 03, 2018, 01:26:32 AM by CA76K10 »

Offline Irish_Alley

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Offline blazer74

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Help with codes on a 12 bolt rear end
« Reply #3 on: November 07, 2018, 01:44:04 PM »
KBH 3:73  open
W217 2      Warren Michigan Plant, 217 day of the year,  shift 2

Should be a date code on the center section web next to the vent tube starting with a letter for the month then 1 or 2 numbers for the day and the last number for the year. Should be a 6 for 76.

My 74 12B date code is A84. (January 8 1974)

CN2 or H 2 2 ?  Where is the H 2 2.
The GM59 and long 3896839 N number are just casting numbers for 12 bolt as far as I know.



« Last Edit: November 07, 2018, 01:49:52 PM by blazer74 »