Well then there is no reason to look at 3/4 ton rear ends. What you have now is a 12 bolt, unless you have a GMC. Most all C10's from '63-'82 came with the 12 bolt. The rear ends from '63-'70 were of the 6x5.5" wheel bolt pattern. The '71-'82's had the 5x5" wheel bolt pattern, and were also 1.5" wider. Do you want to stay with the 6x5.5" wheel bolt pattern or are you wanting to convert to the 5x5" along with front discs? The 3.73 gears are failrly common. There were also 3.42's and 3.08's available in the factory 12 bolts.
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Originally Posted by paul63c10
its a short step side. c10.
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