identification

[824slugger]

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.

[raycow]

Please say what model truck you have.

Ray

[824slugger]

That would help I guess!! Sorry about that. She is a 61 1000 series 4x4.
:champagne:

[raycow]

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

[jimjaz]

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?

[raycow]

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