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04-27-2010, 10:22 PM
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#1 |
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Registered User
Join Date: Feb 2010
Location: Morrisville, PA
Posts: 54
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Differential Question
Which models came with the 12 bolt rear in them.
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04-27-2010, 11:33 PM
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#2 |
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Registered User
Join Date: Jul 2009
Location: West Jefferson, OH
Posts: 999
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Re: Differential Question
All 1/2 tons through like '83 had them.
__________________
-Andy '77 K5 Blazer '78 K10 Shortbed '78 C20 Suburban '79 K30 Crew Cab Dually '84 C10 Short Stepside '88 K20 Suburban 
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04-28-2010, 06:08 AM
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#3 |
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Watch out for your cornhole !
 
Join Date: Jun 2003
Location: Azle, Texas
Posts: 14,162
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Re: Differential Question
My 83 had a 10 bolt factory and I have an 80 model with a 10 bolt factory. I believe 79 was the last full year for 12 bolts.
__________________
I'm on the Instagram- @Gearhead_Kevin |
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04-28-2010, 09:50 PM
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#4 |
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Registered User
Join Date: Jul 2009
Location: West Jefferson, OH
Posts: 999
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Re: Differential Question
After several searches on car-part.com, it looks like...
2wd could have 10 or 12 from '78-'81 4x4 could have 10 or 12 from '81-'83 So, '77 was the last year that everything had a 12 bolt, an '84 was the first year that everything had a 10 bolt.
__________________
-Andy '77 K5 Blazer '78 K10 Shortbed '78 C20 Suburban '79 K30 Crew Cab Dually '84 C10 Short Stepside '88 K20 Suburban
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04-29-2010, 07:18 AM
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#5 |
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Registered User
Join Date: Feb 2010
Location: Morrisville, PA
Posts: 54
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Re: Differential Question
Ok thanks. Recently bought an 86 k10 with a 12 bolt rear and when i went to go get parts they said that truck didnt come with the 12 bolt lol. At least i now know to ask for something pre '79
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