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05-07-2010, 02:05 PM
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#1 |
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Registered User
Join Date: Apr 2008
Location: Phoenix Arizona
Posts: 13
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12 bolt
I Have a 70 k10 and looking to swap in a 12 bolt instead of the 9inch i have installed now and was wondering what years I need to look for for a direct bolt in?
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05-07-2010, 05:06 PM
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#2 |
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Rollin Coal
Join Date: May 2009
Location: Winnebago Illinios
Posts: 131
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Re: 12 bolt
look for the years of our trucks. a 12 bolt isnt that hard to come by. is it a coil spring or a leaf spring truck?
__________________
I have three letters to all these import guys: God-Made-Chevy 04 GMC Sierra 2500HD Duramax  1972 Chevrolet C-30 Dually Pickup stock? 350 SM465 four speed  1977 GMC K-35, TH-400, 4X4 450 horse 454(dad's)  1993 Dodge cummins 5-speed DEAD!! 
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05-07-2010, 05:13 PM
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#3 |
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Registered User
Join Date: Oct 2009
Location: Leesburg, VA
Posts: 424
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Re: 12 bolt
If it already has a 9 inch under it, why the heck would you want to swap a truck 12 bolt under it?
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05-07-2010, 05:17 PM
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#4 |
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Rollin Coal
Join Date: May 2009
Location: Winnebago Illinios
Posts: 131
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Re: 12 bolt
x2
__________________
I have three letters to all these import guys: God-Made-Chevy 04 GMC Sierra 2500HD Duramax 1972 Chevrolet C-30 Dually Pickup stock? 350 SM465 four speed 1977 GMC K-35, TH-400, 4X4 450 horse 454(dad's) 1993 Dodge cummins 5-speed DEAD!!
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05-07-2010, 05:55 PM
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#5 |
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Registered User
Join Date: Jun 2008
Location: Smack-dab in the middle of "The land of fruits and nuts", Sacramento, CA
Posts: 66
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Re: 12 bolt
I'm wondering the same thing!
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05-07-2010, 06:34 PM
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#6 |
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Registered User
Join Date: Sep 2002
Location: DFW Texas
Posts: 2,270
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Re: 12 bolt
Too bad your not closer. I'd gladly swap you a 12 bolt for the 9 inch. If you can get past the fact of having a Ford part on your truck it's a much stronger rearend.
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05-07-2010, 07:05 PM
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#7 |
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Registered User
Join Date: Apr 2008
Location: Phoenix Arizona
Posts: 13
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Re: 12 bolt
Having a ford part on my truck is my biggest issue just looking to have it more original. Just curious what make the ford 9inch stronger then 12 bolt?
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05-07-2010, 07:34 PM
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#8 |
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Registered User
Join Date: Oct 2008
Location: JAY, NY
Posts: 176
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Re: 12 bolt
im not too sure but i know a gm 14 bolt will fit really well..... just did the swap on the 67 last week!
__________________
04 Chevy Colorado Z71 4X4 76 Chevy C-10 Custom Deluxe (sold) 67 Chevy C-30 1 Ton 9' stepper 6.5 Turbo Diesel |
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05-07-2010, 11:48 PM
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#9 | |
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Registered User
Join Date: Oct 2009
Location: Leesburg, VA
Posts: 424
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Re: 12 bolt
Quote:
The pinion bearings are larger. There are 2 pinion bearings on the shaft, and one on the nose. The pinion offset is greater resulting in more surface are contact on the face of the ring gear. The axles are positive retention style at the hubs, no c-clips. The housings are arguably stronger(depends upon the style/year) The center section can be dropped out in about 25-30 minutes to make gear swaps MUCH easier. You can set up new gears on the bench. You don't need case breaks on the diff carrier for deeper gears. I am sure there are more good reasons, but those are among the most common. |
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