CRG Discussion Forum

Camaro Research Group Discussion => Decoding/Numbers => Topic started by: Lukes 69 z28 on June 20, 2009, 02:14:20 PM

Title: 12 bolt posi carrier
Post by: Lukes 69 z28 on June 20, 2009, 02:14:20 PM

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.

Title: Re: 12 bolt posi carrier
Post by: bcmiller on July 04, 2009, 09:12:18 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 ???

Title: Re: 12 bolt posi carrier
Post by: Lukes 69 z28 on July 06, 2009, 03:18:29 AM

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.