I plan on putting in new gears in my 02 GT. It's naturally aspirated and only has bolt-on mods. I do not plan on super charging or spraying. I've always figured I would throw in 4.10s.... But I am second guessing myself now due to how short 1st gear is. Does anyone have any input if I were to start considering 3.90's?

 

staying N/A 4.10 is a good gear. you have 3.27s now so 4.10 would be a nice bump. 3.90s are an option but I really think your combo would like the 4.10s. If you where boosting then no.

 

I have 4.10 in my gt and I love them also my stang is not my daily driver if it was I would go 3.73 , and if you plan on going to the strip or street racing get some after market rear control arms and some nice tires