So I'm new to modding. And seeing ppl have their 3.73s, therefore, would like to try to put it on my 2011 v6. However, due to the experience shortage, not sure what brand should I go with. Ford OEM or aftermarket.

Also I've seen something like 7.6" or 8". What dose these mean. And if I need to change anything else while changing the gear.

Thanks a lot.

 

Go with Ford Racing gears. I bought mine from American Muscle. 8.8 is the size of rear end we have.

 

Must add: 8.8 inch is the ring gear diameter

 

So I should get ford racing 3.73 8.8"?

Thanks btw.

 

Well before you decide which gear set to go with, you should consider your options. If you're not concerned with MPGs some people would say 4.10s are the way to go. However others stick with 2.73s because the can get 33-34mpg. If you're looking for balance between the two, 3.31, 3.55 or 3.73s can do the trick. 3.31s are actually a factory option. I would just recommend researching a little more before just jumping on the 3.73 bandwagon. With that said, I really think 3.73s are awesome. Buy FRPP gears.

 

This really helped. Thanks a lot for the info.

 

3.73 gears are shorter gears than 3.31 so youll be skipping gears more often, 4.10 is unnecessary. 3.55 or 3.31 are the way to go.

 

Yeah with my 3.31s I get about 15mpg city, 24mpg highway, 18mpg combined. I wouldn't want to see what 3.73s do to your mileage.

 

with 3.31's in my stock GT I get 28.8 hwy, but I plan to go to 4.10's . I ran 3.73 Yukon gears in my 05 v6 and with a tune and crapload of mods avg 22 hwy on an aggressive tune and big tires. The Yukon gears didnt whine but I have heard FRPP is the way to go for best quality.

 

So it looks like higher the number. Lower the Mileage. Is that right?

 

correct
also the higher the number, the less top speed.

 

Hmmmm. Kinda hard to pick.

 

Well it would be best to evaluate your purpose with mods. What kind of driving are you plnning to do? Auto-x? Road race? Drag? Or just adding a lil more grunt to your car?

 

That's low, unless you're "having fun"...

I have the 3:31's in my 2011 V6, and I get 24.0 to 24.3 highway (cruizing at 80 MPH) and 23.6.to 23.8 in the nasty stop and go city traffic (downtown 5:00 PM Orlando traffic).

 

I'll say some road race and adding more grunt to the car.

 

Now do you need to retune the car after changing out the gears?

 

Yes, with either the handheld tuner if already tuned or go to Ford to have them recalibrate the PCM for the gears.

 

well lucky you, i get like 17 mpg city but I only have like 480 miles on my car. im heading your way tomorrow, good ol disney for the weekend.

 

Well our highway mileage is the same, but I don't understand how you get basically the same mileage in the city as you do on the highway?

 

He doesnt lol
Tons of people lie or dont know how to measure right or go by like 5-30 minute history from the computer.