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Old 02-04-2010
Great White North Great White North is offline
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Join Date: Jan 2009
Location: Canada
Posts: 9
Default Changing rear differential gear ratio?

I own a 2007 S331 truck and want to change the gear ratio from the stock 3:73 to 4:56.I do not race this truck but want more bottom end power.I have just recently added an electric fan kit, and the JDM super tune.
I am concerned with high RPM'S with every day driving in the city and or highway.

Has anyone done this modification, if so i would appreciate positive and or any negative feedback.


Great White North
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