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Old 06-06-2021, 09:38 PM   #1
airkore65
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Rear differential gear set

Is there a company that makes alternative gear set ratios for the GMC Eaton rear end? Looking for a little more top speed on the highway. Thanks for any advice or info.
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Old 06-06-2021, 10:15 PM   #2
Getter-Done
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Re: Rear differential gear set

There is no company I am aware of.

Here is a Thread 7 pages Full of info on the Eaton.

Page 1: https://67-72chevytrucks.com/vboard/...ighlight=eaton

Page 7: https://67-72chevytrucks.com/vboard/...t=eaton&page=7



And a flip for ya
Name:  eaton.jpg
Views: 102
Size:  51.2 KB







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Old 06-06-2021, 10:29 PM   #3
TBONE1964
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Re: Rear differential gear set

As far as I know, only the stock oe gear sets are out there. 4:10 - 5:13 Call me crazy but I love the challenge of finding the Eaton Parts.

Yes I have considered the 14 bolt swap but think the Eaton is a nice old rear diff. Not hard to demand good money for the used 3rd members. The no spins are getting 4-5 hundred. I paid 200 for my 4:10 open .

The information is Gold. Thank you.
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