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Old 12-05-2015, 11:17 PM   #2
davepl
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Join Date: Aug 2006
Location: Redmond, WA
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Re: Rear Differential Casting Number -- How to Decode??

Sounds like a 3.55 from a Chevelle, but hard to say. Are you sure this is out of a truck? Can you find the 3-letter code?
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