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Author Topic: 12 bolt posi carrier  (Read 1251 times)
Lukes 69 z28
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« on: June 20, 2009, 09:14:20 AM »

I have a 12 bolt posi carrier that I would like decoded. By the bearing opposite the ring gear casting numbers EDB30174 then 260 or 280 . On the ring gear flange it has J-1-F The gears are dated 6-65  .Are any of these numbers on the carrier a date code or are they not dated thanks.
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bcmiller
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« Reply #1 on: July 04, 2009, 04:12:18 AM »

EDB30174 is a 4 series carrier for  3.90:1 & up gears.  I don't know what the 260 or 280 means.  Is there anything else on the ring gear like 41 10 which would be for 4.10 gears Huh
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1968 Camaro SS - now 468 BBC, M21, 12 bolt.
Bryon
Lukes 69 z28
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« Reply #2 on: July 05, 2009, 10:18:29 PM »

Yes the gears have 41 10 . What Iam  trying to find out if carriers are dated for the model year like  the housing are . I was wondering if the 280 is the days of the year or the 28th day of 1970.
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