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Old 01-05-2013, 07:57 PM
BLKBRD BLKBRD is offline
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Default 69 3.90 Rear P/N

What is the part number for a '69 3.90 rear? I'm looking for one with a date code suitable for a 4/9/69 build.

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Old 01-05-2013, 09:12 PM
'ol Pinion head 'ol Pinion head is offline
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hsg casting # is 9795084 N for '69 A-body

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Old 01-08-2013, 07:39 PM
BLKBRD BLKBRD is offline
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Appreciate the info.

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Old 01-08-2013, 08:23 PM
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Steve Hoog Steve Hoog is offline
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Maybe this can help some other time.

http://www.428gto.com/pontiacrearends.htm

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Old 01-09-2013, 12:56 AM
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judger69 judger69 is offline
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Here is a pic of the one in my first week of March '69 Judge. Center section was cast on Jan 3 (Jilian date #3 above the P/N). The assembly date on D.S. axle tube is upside down and says 057. Jilian date - 57th day of '69. If you are lookin for around Sept. 4 built car you'll need to find an assembly date on axle tube around 230 to 240 ish (Aug. guess???) and a center cast date 30 - 40 ish???? days before that. If you find a correct assembly date the center cast date should be correct unless the axle tube has been changed.
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