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10-07-2015, 11:05 PM
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#1 |
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Registered User
Join Date: Oct 2006
Location: Oshkosh, WI
Posts: 101
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12 bolt is a 12 bolt is a 12 bolt?
Are the insides of all 12 bolts the same? A friend has a 12 bolt posi unit he wants to get rid of, but he says he bought it for a Olds car. Is there a way to tell if it will fit my C-10?
http://images.craigslist.org/01010_d...S0_600x450.jpg Thanks. |
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10-08-2015, 12:09 AM
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#2 |
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Moderator
 
Join Date: May 2007
Location: Southern Cal
Posts: 19,994
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Re: 12 bolt is a 12 bolt is a 12 bolt?
It will not if it is for a GM car. The truck 12 bolts are different.
__________________
1972 C/10 Cheyenne Super SWB. Restored, loaded, slammed. 1968 C/10 50th Anniversary LWB. Unrestored, stock, daily driver/work truck. RIP ElJay RIP 67ChevyRedneck RIP Grumpy Old Man |
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10-08-2015, 12:25 AM
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#3 |
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Senior Member
 
Join Date: Feb 2010
Location: Falls City, Nebraska "100 Miles From Nowhere"
Posts: 2,219
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Re: 12 bolt is a 12 bolt is a 12 bolt?
Short answer, "No"...There is a "truck 12" (12T) and the "car 12" (12P)...And to confuse you even more, Oldsmobile 442's have a unique cover and gasket. That Locker will not work in a 12T housing. The unit you want is the Eaton 12T Posi that looks like this
 You need to call these guys with the year of your truck to insure the correct carrier... http://www.ringpinion.com/ When you call Randy's, give them the part number on the Locker. They will be able to tell you exactly what it is and what it fits. PS. If you plan on driving your truck on the street, a Locker is not what you want.
__________________
Michael of the clan Hill, "Two Seventy Two's" 71 1-ton Dually 350 4-Speed 71 C/50 Grain Truck, 350 Split-Axle 4-Speed 02 3/4 ton Express 14 Indian Chief Vintage 1952 Ford 8N, "Only Ford Allowed On The Property"  "Be American, Buy American" 
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10-08-2015, 01:14 AM
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#4 |
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Registered User
Join Date: Nov 2006
Location: KINGSPORT,TN.
Posts: 3,035
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Re: 12 bolt is a 12 bolt is a 12 bolt?
get a power lock by eaton there the cats meow
__________________
I BELIEVE IN JOHN 3:16 |
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10-08-2015, 02:01 AM
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#5 |
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Registered User
Join Date: Dec 2009
Location: bisbee, arizona
Posts: 1,529
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Re: 12 bolt is a 12 bolt is a 12 bolt?
the guts of the Olds 12 bolt dont interchange with either the truck 12 bolt or the chevy 12 bolt, all three are different.
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10-08-2015, 11:19 AM
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#6 |
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Registered User
Join Date: Aug 2012
Location: Midland, TX
Posts: 1,267
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Re: 12 bolt is a 12 bolt is a 12 bolt?
Try a PowerTrax. I'm using one in my truck and 69 Camaro. Here's a video of it compared to a posi.
https://www.youtube.com/watch?v=8k-LmnS3ED0 Here's a tug-O-war between PowerTrax and limited slip https://www.youtube.com/watch?v=T8pJxiE0vQw You can see the one I installed in my build thread. 
__________________
1969 RS/SS Z10 Camaro Pace coupe 1972 GMC Short Step buildhttp://67-72chevytrucks.com/vboard/s...=1#post6356218 1979 Mazda RX7 1979 Pontiac Trans Am WS6 & 1979 Pontiac Trans Am 10th Anniversary 1999 Honda Valkyrie 2006 Corvette Z06 2010 BMW 650i |
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10-10-2015, 07:49 AM
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#7 | |
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Registered User
Join Date: Jan 2014
Location: Billings Montana
Posts: 183
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Re: 12 bolt is a 12 bolt is a 12 bolt?
Quote:
But when I suggest them with friends or they come up in conversation everyone balks at them for some reason. Not sure why but my oldest is going on maybe 15 years with 0 problems. |
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10-10-2015, 01:27 PM
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#8 |
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Registered User
Join Date: Sep 2014
Location: Milwaukie, OR
Posts: 223
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Re: 12 bolt is a 12 bolt is a 12 bolt?
I just put an Eaton Trutrac carrier in my truck last weekend, it took most of the day on Saturday but was not hard to do at all. The hardest part was getting the shims in and the backlash right while working under the truck but it was not bad at all. Just glad I did not pay double for someone to install it.
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