Hi, I see that the aftermarket & Ford offers a 3.90 ring and pinion. Has anyone tried this out on the 5.0 and if so what is your impression?
I had 4.10's in previous mustangs and enjoyed them, but they could be steep.....5.0 is a six speed and should make a difference in overall driveability with 4.10s. Another thing is with a 5 speed 1st to 2nd gear shift is in no time....I'm sure the six speed would be the same.....3.90 may be an improvement?
Do the 4.10s offer the best performance improvements based on the basic mods everyone typically does: CAI, Tune, Headers/exhaust and maybe a supercharger? 3.90 may offer better 1/4 mile times?
Any advice would be appreciated?