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Old 01-05-2011, 08:47 PM   #1
sysock
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rear c-10

i have a 77 c-10, did they come with the ten bolt 8.5 rear? its open diff and im looking at possible upgrades to have or make a posi rear.

thanks,
chris
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Old 01-05-2011, 10:03 PM   #2
N2TRUX
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Re: rear c-10

77 came with a 12 bolt.
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Old 01-05-2011, 10:54 PM   #3
Pop's C-10
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Re: rear c-10

powertrax..drop in unit...

http://www.jegs.com/i/Powertrax/754/...oductId=744476
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Old 01-05-2011, 11:38 PM   #4
79 silverado
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Re: rear c-10

Because of how often these trucks were pieced together over the years, I'd recommend getting under the truck and counting the bolts around the differential cover to see what you had...
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