went home for the weekend to install my magnapacks in my brothers garage and decided to overnight some 4.10's and install them while i was home. My 2010 GT came with 3.31's from the factory and these 4.10's really woke up this car. I thought that it would affect my highway RPM but it wasnt as bad as expected. Only 2,500 at 75 and about 2,800 at 80 is not bad. I drove it all the way from New Hampshire to Maryland 2 days after the install and gas mileage was not bad. The only issue that i have now the the speedometer. Its off by about 15-20 MPH and racking up miles fast. Does anyone know if a tuner can adjust the speedo?
If anyone is thinking of doing rear gears go for the 4.10's you will not be disapointed.
If anyone is thinking of doing rear gears go for the 4.10's you will not be disapointed.