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Transmissions and Rear Ends Three on the tree or four in the floor? Shift it all here.

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  #1  
Old May 9th, 2013, 10:17 PM
824slugger 824slugger is offline
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Default identification

Hey guys and gals. Was wondering how to identify my front/rear gear housings if there are no #s. They are both 10 bolt but that is all I know.
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Old May 10th, 2013, 04:19 AM
raycow raycow is offline
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Default Re: identification

Please say what model truck you have.

Ray
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Old May 10th, 2013, 11:01 AM
824slugger 824slugger is offline
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Default Re: identification

That would help I guess!! Sorry about that. She is a 61 1000 series 4x4.
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Old May 11th, 2013, 09:40 AM
raycow raycow is offline
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Default Re: identification

Without seeing them, I would expect they are Dana/Spicer Model 44. These would have irregularly shaped 10 bolt covers, not round. If they don't both look the same, please post pics.
http://coloradok5.com/axleguide.shtml

Ray

Last edited by raycow; May 11th, 2013 at 09:45 AM.
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  #5  
Old May 14th, 2013, 12:57 AM
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jimjaz jimjaz is offline
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Default Re: identification

Ray,

I always thought that the "10-bolt" differential (cover) referred to the GM or Corporate diff.
Could it be that this described '61 1000 4x4 is a Chevrolet?
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Old May 14th, 2013, 02:44 AM
raycow raycow is offline
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Default Re: identification

Those are two completely different rears. The GM corporate 10 bolt has a cover that is more or less round. The Dana 44 cover is sort of hexagonal.

Now I have never looked at a GMC 61 4WD closely enough to see the rear. The Chevrolet 1/2 ton rear for that year has a removable center section (comes out from the front) as well as a round cover. Chevrolet 1/2 ton trucks changed to a rear with a 12 bolt cover (not the same as the car 12 bolt) in 63. What most people think of as a 10 bolt wasn't used on trucks until sometime in the 1980s.

If you need more help identifying what you have, please post a pic.

Ray

Last edited by raycow; May 14th, 2013 at 02:52 AM.
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