Sleeper 362
New Member
I wish I read this sooner. 3.90s are not made by fms and you are running a strong risk of very bad gear whine when you don't go the fms route. I know alot of people that won't install them unless they are FMS.
Blev said:all is not lost. I am picking up the gears on Sat. So I can switch with no probs. So you say no go on the 3:90's!! Will 3:73's still give me a better jump off the line while keeping a decent enough gear to do 90 on the freeway?

WRXracer said:my gas milage went up with 373's..
jrc_03_gt said:get the 3.73's and forget it! It will still be an improvement. If you are going to run stock tires you will not be able to put the power to the pavement anyway with 4.10's.
GinoGT said:4.10's dammit. Why the hell would someone buy a Mustang GT and start crying about gas milage?! Fearing the gear is one of the worst possible things you could do to your car. If it had the ability, your car would kill you in your sleep.![]()