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#1 |
Registered User
Join Date: Jan 2010
Location: Calgary, AB
Posts: 1
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12 Bolt Gear Swap
I am new to this board and looking for a little help. I have a 65 C10 with 12 bolt diff and want to swap in 3.08 gears and carrier from a 70's truck 12 bolt. Can I use my original axels? I dont want to change everything over to 5 lug wheels. Thanks for the help.
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#2 |
Registered User
Join Date: Nov 2009
Location: Tampa Fl.
Posts: 103
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Re: 12 Bolt Gear Swap
A 72 axle is wider, so you couldn't use them anyway...you will need the side gears from the 72 axle because of a different spline count on the axleshafts..hope this helps
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#3 |
Registered User
Join Date: Nov 2009
Location: Cremona AB Canada
Posts: 370
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Re: 12 Bolt Gear Swap
I can help you over the phone (local call ) PM me for phone number
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62 GMC 910 short fleetside 454 super t10 14 bolt w/gov lock 70s c20 front discs (built in the 80s) 65 GMC 930 dualwheel 292 4spd all origonal 39k mi(my sons truck) 63 GMC 950 camperized school bus, (Gus the bus) 350 4speed 2 speed rear 64 GMC 950 "spare" bus 283? 4speed detroit locker 53 GMC 1ton dual wheel bus 78 GMC c25 short course off road race truck(son's truck) 355 th400 14 bolt (www.wheel2wheel.ca) 88 Peterbilt 379 longhood (hauls race truck) ![]() ![]() ![]() ![]() |
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#4 |
Registered User
Join Date: Jun 2009
Location: Eugene, OR
Posts: 200
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Re: 12 Bolt Gear Swap
Do like I did and swap out the whole rear end (3.73 - 12 bolt) for a '72 3.08 12 bolt. No mods required.
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Project Build (1): http://67-72chevytrucks.com/vboard/s...d.php?t=362482 Project build (2): http://67-72chevytrucks.com/vboard/s...d.php?t=370985 “Life should not be a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside in a cloud of smoke, thoroughly used up, totally worn out, and loudly proclaiming...Wow, What a Ride!” - Hunter S. Thompson |
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#5 |
Junior Member
Join Date: Dec 2006
Location: Newburgh, IN
Posts: 1,247
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Re: 12 Bolt Gear Swap
Sicboy,
Do you mean you just swapped out the innards or the whole thing?
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1966 Chevy C10 Longbed I'm Bob....ol Curt was my Grandpa The truck was his and he sure as heck wouldn't understand why I took a perfectly good truck and tore it down! ![]() |
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#6 |
Registered User
Join Date: Jun 2009
Location: Eugene, OR
Posts: 200
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Re: 12 Bolt Gear Swap
The whole thing. The '72 has 6 lugs, same spring perches and is an inch wider on both sides. Even though the rear end is wider, the wheels fit fine within the fender wells (no mods), and it gives the impression of wider wheels.
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Project Build (1): http://67-72chevytrucks.com/vboard/s...d.php?t=362482 Project build (2): http://67-72chevytrucks.com/vboard/s...d.php?t=370985 “Life should not be a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside in a cloud of smoke, thoroughly used up, totally worn out, and loudly proclaiming...Wow, What a Ride!” - Hunter S. Thompson |
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#7 |
Registered User
Join Date: May 2007
Location: Frisco, TX
Posts: 80
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Re: 12 Bolt Gear Swap
how bout a pic from the back
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#8 |
60-66 Nut
![]() ![]() Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,247
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Re: 12 Bolt Gear Swap
It must have been from a 4x? The 2wd's had a 5 lug bolt pattern starting in '71.
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