MUSTANGGT06

Does anyone know if the RPM redline will change after installing 4.10 gears on a 06 GT automatic. I know that it is 6000 RPM as stock. I have also installed bigger 255/50 17" tires and a C&L air intake with Predator Tune. I Just purchased a Gtech Pro SS and I am trying to calibrate the RPM's.

Stkjock

no, RPM doesnt change, just the MPH you reach it in....

07 GT E UPP

Well Mustang 06, your Red-Line stays the same at 6000 rpm's unless you decide you now want to start shifting higher, say.....6500 rpm's .
It's a matter of how much quicker you will now get to re-line and what mph you will now be doing. Obviously with 4:10 gears, you will get to whatever you set your re-line at alot quicker !!!

owero01

You have to change the rev limit with a tuner. You do hit it quicker with 4:10 gears.