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#1 |
Senior Member
Join Date: Apr 2005
Location: Joppa, Maryland
Posts: 4,408
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12 Bolt Posi ?
Is a 12 bolt posi unit/carrier for a our trucks the same as a 12 bolt posi/carrier for a car?
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1997 GMC Sierra Ext 1965 Mustang Last edited by 70GMCer; 04-15-2007 at 11:22 AM. |
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#2 |
Oilfield Trash
Join Date: Sep 2003
Location: Raymore, Sk, Canada, Earth
Posts: 3,171
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Re: 12 Bolt Posi ?
No it isn't, the car has a bigger pinion shaft, and the housings are different.
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14 Dodge 3500 Mega Cab 08 Dodge 3500 Mega Cab 87 Chev 3+3 4x4 80 GMC K10 High Sierra bone stock 70 Chevelle 350SS long term project 68 GMC 3ton Grain Truck/Garbage wagon 50 Pontiac 2 Door Coupe Project "I've got a shotgun rifle and a 4 wheel drive and a country boy can survive" Hank Jr. |
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#3 |
Senior Member
Join Date: Apr 2005
Location: Joppa, Maryland
Posts: 4,408
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Re: 12 Bolt Posi ?
Not talking about the gears or housing........the posi carrier itself. A few people in the past have told me that they are the same. Just want to make sure of this on here.....
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1997 GMC Sierra Ext 1965 Mustang |
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#4 |
Junior Member
![]() Join Date: Mar 2005
Location: Wilmington DE
Posts: 218
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Re: 12 Bolt Posi ?
No they are not the same. I just rebuilt the 12 bolt in my truck and needed a new carier . I got a new eaton .
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#5 |
Oilfield Trash
Join Date: Sep 2003
Location: Raymore, Sk, Canada, Earth
Posts: 3,171
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Re: 12 Bolt Posi ?
I am 99% sure that the carrier is different, just because everything else is different, the housing, gears, etc. Plus car and truck rears always have seperate listings for part numbers, etc.
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14 Dodge 3500 Mega Cab 08 Dodge 3500 Mega Cab 87 Chev 3+3 4x4 80 GMC K10 High Sierra bone stock 70 Chevelle 350SS long term project 68 GMC 3ton Grain Truck/Garbage wagon 50 Pontiac 2 Door Coupe Project "I've got a shotgun rifle and a 4 wheel drive and a country boy can survive" Hank Jr. |
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#6 |
Active Member
Join Date: Apr 2005
Location: Miami, Florida
Posts: 286
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Re: 12 Bolt Posi ?
The differences are the pinion shaft diameter, 1.438" for a truck and 1.625" for a passenger car and the bolt patterns.
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#7 |
Registered User
Join Date: Dec 2006
Location: Rhode Island
Posts: 602
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Re: 12 Bolt Posi ?
Eaton 12-bolt Posi carrier:
The car version is one part number, the truck is a different part number entirely. Ring and pinion sets are entirely different too.
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69 C-10 SWB Fleetside 454/TH400 (For Sale) http://67-72chevytrucks.com/vboard/c...ct=1299&cat=12 70 El Camino 454 TH700 29 Model A 4-DR Sedan Deluxe |
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