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Old 12-17-2016, 06:22 PM   #1
cavedog309
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Join Date: Sep 2016
Location: Harrisburg, Pa
Posts: 16
12 Bolt 3 Series

In need of Differential Guru ? Have 81 C10 with 6 Cylinder , Turbo 350 and 12 Bolt Truck Differential Changed out to 350/350 but doesn,t matter i guess. Anyway in my research online that has me confused . Evidently I have a 3 Series 12 Bolt Rear. Does this mean I can only run up to a 3.42 Posi Trac rear ? Or can I run a 4:new: Series as Long as I use the 4 Series Carrier ? :ito::ito:

Last edited by cavedog309; 12-18-2016 at 06:00 AM. Reason: Add Picture
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