Rearend identification

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 ====8.5" applications====
-The 8.5" corporate 10-bolt rearend began production in 1971 to replace the 8.2" and 12-bolt rearends. There was simultaneous use of the 8.2 and 8.5 during the changeover period, like in the Nova.
+Sometimes referred to as the "corporate 10-bolt", the GM 8.5" 10-bolt rearend began production in 1971 to replace the 8.2" and 12-bolt rearends. There was simultaneous use of the 8.2" and 8.5" rearends during the changeover period, like in the Nova. Has a 10 bolt cover as well as 10 bolts securing the ring gear.
+The 8.5" 10-bolt GM rearend has a 30 spline pinion, uses C-clips, and could have 28 or 30 spline axles depending on the year. It uses a 1-1/4" pinion nut.
 ====10 bolt ID====

Revision as of 08:56, 18 February 2013