4.10 Gear videos in daily driving

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Im going 4.10 in my car. I'll probably go FMS since I have had no problems in the past with them. I'll also do the rebuild kit while there doing them. Possibly an aluminum driveshaft but there mucho money now. How much is the speed cal?
 
mdvaldosta said:
Heres a track vid with 245/45/17 Nitto's on stock rims. Have 4.10's of course.

http://www.moddedmustangs.com/videos/MD11.wmv

As for the torque improvement... you could take engine tq x 1st gear ratio x rear gear ratio and get your torque to the tires... but its all relative anyways. Just take your current gear ratio (like 3.27) / new gear ratio (4.10) = 20+ % more torque
sweet vid