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Classic Truck Discussion Board

Re: 12 bolt diff..

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Posted by Kent of SW MO on March 25, 2005 at 06:27:56 from (

In Reply to: 12 bolt diff.. posted by 68c10lwb on March 25, 2005 at 05:40:14:

It is not 3" or 4" carriers. It has to do with the ratio the carrier can be used on. A 3 carrier is needed for ratios any where in the 3 range like a 3.73 or a 3.23. A 4 carrier is for like a 4.11. Some companys bulid a 4.11 gear for use on a 3 carrier. If you get the wrong set-up you either wil not be able to get the ring gear and carrier in the axle housing or if you can get it in you will not be able to set the backlash.


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