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Old 07-01-2011, 04:57 PM
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What auto did this rearend come from?

This rearend is on the 64 C10 I am working on. It has 5 bolt drum brakes. It's leaking fluid and has bad brake lines.....so I need parts but cant determine what to ask for.

Can anyone help me identify it?

Thanks
Glenn
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Old 07-01-2011, 05:04 PM
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Could it possibly be the stock axle?
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Old 07-01-2011, 08:22 PM
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Quote:
Originally Posted by gotmud
This rearend is on the 64 C10 I am working on. It has 5 bolt drum brakes. It's leaking fluid and has bad brake lines.....so I need parts but cant determine what to ask for.

Can anyone help me identify it?

Thanks
Glenn

according to this here
its a 12 bolt truck diff.
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Old 07-02-2011, 12:49 AM
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It should have a Casting # & casting date on the Webs on the side of the center housing.
71 up used 5-lug axles.
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Old 07-02-2011, 08:33 AM
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Quote:
Originally Posted by SSedan64
It should have a Casting # & casting date on the Webs on the side of the center housing.
71 up used 5-lug axles.
SSedan64 its a small world. I'm from Macon. Graduated from SW.
The casting number that I can read says "K 287" on the bottom left back side of the center housing. On the front right side it says "GM5'6" and on the front left side is says"NF3896838".
Does that mean anything?
Thanks again,
Glenn

Last edited by gotmud; 07-02-2011 at 08:44 AM.
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Old 07-02-2011, 09:06 AM
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Waited to long to edit the last post.....The casting number that I can read says

"K 287" on the drivers side- rear of the center housing.
"GM5'6" on the drivers side - front of the center housing
"NF3896838" on the passengers side - front of the center housing
"1207" on the passengers side axle tube

Does that mean anything?
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Old 07-02-2011, 09:10 AM
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rear end

Definitely a 12 bolt chevy truck rear end, 12 bolt rears were the strongest made by Chevy.
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Old 07-02-2011, 09:16 AM
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Quote:
Originally Posted by gotmud
Could it possibly be the stock axle?
I agree that is most likely the stock axle. Allan
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Old 07-02-2011, 11:17 AM
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My 64 C-10 has the panhard rod bracket welded to the passenger axle tube.
Might be from a 71 C10. Not sure.
Might want to measure the width of the whole thing.
I think the 60-66 are a bit narrower than the later trucks

NOT the stock axle with a 5-bolt pattern
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Old 07-03-2011, 04:21 AM
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There should also be a stamped code on the front of the passenger side axle tube. This wil tell you more Info. http://talk.classicparts.com/showthread.php?t=10431 That NF3896838 Casting # on the center section appears to have been used in several years.
The casting Date is usually something like the *K287*= December/28th/67,77,87.

http://www.google.com/search?hl=en&s...7l1734l0.3.5l8
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Old 07-03-2011, 07:29 AM
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Looks similar to the differential under my 1971 1/2 chevy truck. My truck had the coil springs as I guess most trucks that year had
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