3.31

Loaded 3.31 rear differential for sale - Iron housing. TractionLOK / Clutch pack LSD. Pulled from a 2015 mustang GT manual so this has the 113mm pinion flange. This will only mount up to a driveshaft that has the matching pinion flange (or you can swap pinion flange/driveshafts). Miles: 52k...

***ISSUE SOLVED*** There is a SMALL round Toner Ring ( google has no pics nor does ford) It is a super small flat ring with 3 pegs that sits on the half shaft between the Hub bearing assembly. No documentation it, ford dealer could not even find the issue. After comparing the left to right side...

Ok so I have a 468/447 HP/TQ pony. That in 105 degree Houston weather can run a 4 second flat 0-60, and almost sub 9 second 100. I love that neck snap, I havnt tracked my stang yet, since its new but planned on it, so I got 3.31 rear gears, Im still fast after mods. But kind of regret not...

Howdy, I am trying to go from a 27.3 diameter tire to a 28+ diameter tire and go from a rear axle of 3.31 to 3.73. I know mechanically it will be not so bad but I dont know how to re-calibrate my ECU or speedometer. I could buy a tuner but not sure if that would void my warranty by just...