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07-10-2015, 12:44 PM
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#1 |
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Registered User
Join Date: Jul 2015
Location: savannah,new york
Posts: 1
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68 c10 diferential
i have a 68 c10 I bought 308 ring and pinion but I've been told I can't use them with 373 carrier is this true ? I appreciate any help with this.
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07-10-2015, 01:00 PM
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#2 |
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Registered User
Join Date: Sep 2008
Location: Ontario, Canada
Posts: 34
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Re: 68 c10 diferential
I believe you can't use the gears because 3.73 is a 4 series carrier and 3.08 is a 3 series carrier. I believe 3.53???? And above are 4 series. I did buy and install 3.73 gears to replace my 3.08 gears they work because I specifically got 3.73 gears for the 3 series carrier. Got them from "Ron's Machine Shop" online and on eBay been using them 4years. It's been awhile so if my info needs correction I take no offence. Have a great day!
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07-10-2015, 01:19 PM
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#3 |
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Registered User
 
Join Date: Jan 2012
Location: Washington,Il
Posts: 632
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Re: 68 c10 diferential
Yes if you have a 3.73 gear now your carrier is most likely a 4 series. There are spacers that are used at times. but that is if your running say 3.08 and want to go to a taller gear set and don't have a 4 series carrier. If your 3.73's are factory then you have a 4 series carrier. Like MO1968 stated the lowest gear you would be able to use on your carrier is 3.50 something.
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It builds on my intelligence when I make a mistake, Boy am I building on it! '67 C-10,'70 Nova SS 
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07-10-2015, 06:04 PM
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#4 |
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Registered User
Join Date: Jun 2006
Location: Indiana
Posts: 4,859
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Re: 68 c10 diferential
GM12 bolts with 3.08 gears are a easy to find. I would (did) just swap the entire rear end. A GM12 bolt with 3.73 gears is highly sought after. Your phone will ring off the hook if you post a "trade" on Craig's list. Shoot, some would even volunteer to help you with the swap or just let you supervise.
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'70 GMC C1500 LWB Power disc brakes. WooHoo! Posi 6 Lug Dana 60 |
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