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ring gear mis-stamp?

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Old May 11, 2017 | 09:11 PM
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69C3dreaming
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Default ring gear mis-stamp?

Possibly buying a rear diff and had a few questions. It's iron case but out of an unknown year. Seller has texted a couple pictures, ring gear is a Dana stamp and looks like 1973 for date. 1 7 73 Dana 34840 A3D34X 41-10. Question-I thought 41-10 checked out to a 4.10 ratio but owner said actual ring tooth count is 37. So has anyone came across a similar mis-stamp? I'm planning to make the trip and look it over in person. Any things I should look for specifically?
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Old May 12, 2017 | 11:51 AM
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Originally Posted by 69C3dreaming
Possibly buying a rear diff and had a few questions. It's iron case but out of an unknown year. Seller has texted a couple pictures, ring gear is a Dana stamp and looks like 1973 for date. 1 7 73 Dana 34840 A3D34X 41-10. Question-I thought 41-10 checked out to a 4.10 ratio but owner said actual ring tooth count is 37. So has anyone came across a similar mis-stamp? I'm planning to make the trip and look it over in person. Any things I should look for specifically?
Use this chart to ID the gears.

-Willcox
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Old May 12, 2017 | 06:43 PM
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Thanks for the info ! This wasn't a mis-stamp just a straight misrepresentation. Pictures sent had good looking teeth and I could make out the stamping listed above. Well back cover removed and bright as day was the GM stamping for a 3.36, 11 pinion and 37 ring teeth out of a 1976. Oh and two chipped teeth that weren't mentioned, that was a couple hours after work wasted. Might have low balled just for the case and posi carrier but the whole no explanation on different stamps put me off. Cr....List Thanks
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