Change 3.31 to 3.55 or 3.73

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06-19-2015, 06:30 PM

150 Gone

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Join Date: May 2015

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Change 3.31 to 3.55 or 3.73

Just bought 2014 F-150 with 3.5L Ecoboost. The rear end is 3.31. Can it be changed out to a 3.55 or 3.73 to improve towing torque? Towing about 6500 lbs.

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