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#1
04-24-2008, 05:07 PM
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How to ID a 12 bolt rear end?
Hi,
I have a 12 bolt rear end from a Chevelle or something similar that I am thinking I might want to part with. How do I identify it and figure out the date codes and stuff?  Thanks, Joel
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Minnesota Hemi Guy 
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#2
04-24-2008, 05:46 PM
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Re: How to ID a 12 bolt rear end?
As well as what this diagram shows,relay all the letters and numbers lightly stamped in the passenger side axle tube usually facing the floor board,or front end.
The casting date & CON1 locations have been found to interchange between those locations shown,and also at the 4 O'clock & 8 O'clock positions.  [i]Drawing Courtesy of Camaro Research Group)
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#3
04-24-2008, 05:49 PM
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Re: How to ID a 12 bolt rear end?
Hi Joel, see if this helps.
General info..... http://www.chevellestuff.com/qd/gene..._axle_info.htm Axle codes.... http://www.chevellestuff.com/qd/axlecodes.htm Everything you ever wanted to know about Chevelle rear ends (well almost). 
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...................... John Brown This isn't rocket surgery.....
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#5
04-25-2008, 07:17 PM
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Re: How to ID a 12 bolt rear end?
Good info Joe Brown. Thx
__________________
1965 Malibu SS Convertible 1967 Nova SS LS1 Sold! 1967 Nova SS LS9 800HP 1970 El Camino SS396 4/Sp
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#6
04-25-2008, 11:13 PM
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Re: How to ID a 12 bolt rear end?
The first thing I look for is the taper on the tube behind the flange. Chevy uses press in bearings. B O P tubes are straight. Bolt in axels.
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