2012 rear end gear swap question - Page 2 - Dodge Cummins Diesel Forum
4th Gen Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine, Transmission, etc...NO ADVERTISING

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post #13 of 14 (permalink) Old 08-09-2014, 11:11 PM
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I have my truck in the shop now having the gears/lockers installed. You guys who have done it already, did you have to get the computer adjusted at all? I know the speedo goes through the wheel speed sensors so gears shouldn't affect it but I'm not sure if the computer needs to be reflashed with the new ratio.

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post #14 of 14 (permalink) Old 08-10-2014, 03:18 AM
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I am going to regear with a 4.10 or a 4.30 and run 35s just don't know which one I want to go with yet. I will also be installing full air lockers front and rear.

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