Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - Please help ID my GM 12 bolt
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Old 12-12-2011, 10:09 PM
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You were close- it's actually "CCH". Means it was originally a 2.73:1 posi. The "0909" is September 9, which corresponds to the August 29 casting date.

The "B" is Buffalo, NY assembly plant.
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