10 bolt to 12 bolt swap - The 1947 - Present Chevrolet & GMC Truck Message Board Network



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10 bolt to 12 bolt swap

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05-20-2017, 12:34 PM

#11

russgt

Registered User

Join Date: May 2008

Location: Waukesha, WI

Posts: 904

Quote:

Originally Posted by Mr.Chevy4x4

The 12 bolt has a carrier break between 3.42:1 and 3.73:1, so you won't be able to use the eaton posi with 3.73 gears. That's another area where the 10 bolt is better. There is no carrier break for the 8.5.

Mike

That's why they make thick gear sets. I purchased a set from Richmond, it worked out great.
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