Mileage change from 3.42's to 4.10's?
#1
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With no other changes, how much does gas mileage suffer going from 3.42 gears to 4.10 gears w/ an M6? I haven't seen a definitive answer on this, so I'd like to hear from people who have done the swap. Also, what kind of 1/4 mile gains will I see?
#2
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I changed my 3.42's to 4.10's and the mileage stayed around the same. At worst I noticed that it dropped 1-2 miles per gallon,but that could be how the car was driven on that tank.