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**uncle** · 12-25-2007, 08:48 AM

The lowest gear (In Numbers) for the 1st rear is a 4:10,so that could be one thing to consider if you drive over 60 often. You can pull the cover on the other 12 bolt to check gear ratio or there is a 3 letter code on the p/s axle tube between the chunk and perch.

12-25-2007, 08:48 AM	#5
uncle Senior Member Join Date: Aug 2003 Location: Conyers,Ga. Posts: 7,289	Re: Opinions Wanted - 1972 C20 The lowest gear (In Numbers) for the 1st rear is a 4:10,so that could be one thing to consider if you drive over 60 often. You can pull the cover on the other 12 bolt to check gear ratio or there is a 3 letter code on the p/s axle tube between the chunk and perch.