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01-26-2011, 03:44 PM
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#6 |
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VIP Member
Join Date: Jun 2006
Posts: 3,420
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Re: chev 12 bolt
The ORIGINAL rear end that came from GM was a 3:31 open gear---that is not to say that somewhere down the road it has not been changed to either a POSI or an entirely different ratio--- but as originally manufactured it was a 3:31 open ---sounds like ya got a posi in there whats the numbers on the gears???
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