[StangCruisin]

ive got a v6 mustang, and i like top speed. im in the process of giving it more hp. i currently have a cai and plan on a new throttle body and a cat back exhaust system. so for highway haulin' top speed, do i want 4.10 or 3.73, or some other ratio gears?

[StangCruisin]

...or are they both going to decrease top speed from stock gears?

[016erstang]

They will decrees your top end speed just on what type of gears is the over all factor. Gears help you get into your rpm range faster then hitting a top speed. I got 4.10s in mine and have a great off the line feel. On the highway doing about 70 I am running about 2400-2500 rpms and I get about 25mpg as well.

[Redlyr]

They will both drop your top speed.

Edit: Also, unless you plan on running forced induction (Turbo, or supercharger), skip the throttle body. They do very little for a normally aspirated car. I suggest you put some of that towards the gear change and a tuner. Those will give the best "bang" for your buck.

[StangCruisin]

hmmm. i never thought about the throttle body thing.

thanks dudes

[oneFASTmustang]

the top speed of 4.10s is about 160mph... that should be enough

Just got 4.10s in my GT and I LOVE THEM!!!! There a lot of fun!

[shinerstang]

What year is your car?

[StangCruisin]

i have an 03 v6