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- - Oe Posi Numbers (http://www.hotrodders.com/forum/oe-posi-numbers-86127.html)

oldsmo

04-05-2006 06:59 AM

Oe Posi Numbers

Does anyone here have a original GM parts number for a 8.5 28 or 30 spline posi differential case? Any years between 85-88. I believe that the 30 spline will fit right in were the 28 spline was only you would need the axles to go with it correct?

Thank you....

73oldsman

04-06-2006 02:02 AM

Don't know for sure, but this may help
http://www.oldsmobility.com/10bolt-tech.htm
http://www.novaresource.org/axle.htm

oldsmo

04-06-2006 06:04 AM

thanks you

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