you will see a big difference. although it will not add horsepower it will def make your car a lot quicker. im not sure how much time it would knock off ur 1/4 time but i would deff recomend them
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03 MUSTANG GT,4R75W KENNE BELL 2.1 S/C NON-INTERCOOLED 6PSI
36LB INJECTORS,MONO CHIP,AUTOLITE 103s
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FORD RACING 3.73 GEARS
yeah you won't gain horsepower, but your acceleration is wayyy better. I don't know by experience but after searching these forums this is what I learned. Your 0-60 time is cut by a-lot, but you might lose mpg's depending upon how you drive, because with new gears your engine will be running at higher RPM's. If you mash on it everywhere (which will probably be tempting with new gears) your mpg will suffer. If you just do normal driving with some hard acceleration every once in a while, I'm sure it wouldn't go down a whole lot. Just search these forums
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yeah you won't gain horsepower, but your acceleration is wayyy better. I don't know by experience but after searching these forums this is what I learned. Your 0-60 time is cut by a-lot, but you might lose mpg's depending upon how you drive, because with new gears your engine will be running at higher RPM's. If you mash on it everywhere (which will probably be tempting with new gears) your mpg will suffer. If you just do normal driving with some hard acceleration every once in a while, I'm sure it wouldn't go down a whole lot. Just search these forums
Yes yes yes yes! Stl, even if someone wants to run a ridiculous TT setup, I think anyone would benefit more from the 3.31s... Even if the jump is to 3.51s(?).
Unless of course you're aiming for top speed!
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Yes yes yes yes! Stl, even if someone wants to run a ridiculous TT setup, I think anyone would benefit more from the 3.31s... Even if the jump is to 3.51s(?).
Other than forced induction, probably the most increase you will get from any mod. If you do alot of highway driving and not much track time, you might want to consider 3.73's. With the stoch tires and wheels you will be at 2,750 rpm @ 80 mph. Put it in 4th and go on the highway at that rpm to get a feel for the sound.
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2006 Mustang GT. CDC classic chin spoiler,Off road x , FRPP GTA axlebacks,Tunable Induction CAI,SCTtuner. FRPP 3.73 gear,Rear window louver,Qtr window louvers.CDC shaker hood,M&H drag radials, and ZEX 125 shot nitrous for insurance!
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Other than forced induction, probably the most increase you will get from any mod. If you do alot of highway driving and not much track time, you might want to consider 3.73's. With the stoch tires and wheels you will be at 2,750 rpm @ 80 mph. Put it in 4th and go on the highway at that rpm to get a feel for the sound.
can you explain the whole rpms thing again. I don't quite follow it.
RPMs are revolutions per minute. When you install a numerically higher gear ratio, your RPMs are increased. Think of gears as a "multiplication" of your engine's power. The higher the gear... The higher the RPMs at a certain speed.
Does that make sense??
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I have a 2006 GT. It is an auto so it has the 3.31 gears i believe.
If I were to upgrade to say 4.1's, would it be worth it? To have them installed is like 600 cause i would be getting it done from a ford dealership.
What kind of performance gain am i seeing?
YES! Do it
The below info may help you out quite a bit:
You have the ability to answer the question of what gear ratio will work best for you. Don't simply listen to some dork that says you "need X.XX gear because they ROCK!" For all you know they are borderline brain dead. Just because they don't mind driving around with the motor spinning to the moon doesn't mean you won't.
This is the most important information you need before making your own choice based on your situation:
What RPM’s do you want to be cruising down the freeway at and at what speed. Think about that hard, and go drive the car. Drive it for 2 miles at 3,000rpm…..it will most likely drive you crazy. If it does, you want to make sure you don’t get a gear that will put you in that range. I have mine set up to run at 2400rpm’s@80mph. I wouldn’t want to spin it any higher than that even if it costs me a bit of acceleration.
Depending on what the height of your tires are I'll bet you will want 3.55's or 3.73's to get a comfortable cruising RPM.
I run a 3.55 and couldn't imagine wanting to gear my car shorter than it is. I do have a screw blower though. 1st gear is worthless, I just punch it and have to shift right away and 2nd gear will haze the tires even though I have some seriously sticky rubber. Shorter gearing wouldn't get me going any faster....faster. It could possibly even slow me down.
Even if you don't have a blower but have stock-ish tires (high performance, all season about 235-245mm wide) you will still light the tires up something good in first and have to go for second super fast which makes that gear borderline useless. You will still lightly spin the tires most of the way through second too (if you make the 1-2nd gear shift fast) which lessens the effectiveness of that gear too. Which will slow you down.
When I had my stock 3.31's and stock Pirelli tires (about 75 miles ) I could SPIN the tires all the way through 2nd gear if I wanted too.
Use this gearing calculator. It will help you pick a gear for your situation. Use the # .71 for the auto trans ratio and .68 for the 5 speed. You will also need to measure the height of your rear tire at the right pressure sitting on the ground. You can keep firing numbers in till you find the gear that gets you the cruising RPM that you are looking for.
i have a 06 gt auto and the best mod i have by far is the 410 gears.it feels like you gained 100 hp to the wheels.but if you do a lot of highway driving 80+mph.i would not get them.at 80 mph i am almost at 3k rpm.but i dont do much 80+mph driving for long periods of time.my gas milage is the same as before the gears just for the record.with my 06 gt auto and cai and 93 race tune and 4.10 gears i beat a lot of cars i have no bussiness even racing and they get smoked.without the gears that would not be the case.
Are new gears worth it? 
all motor now.Don't ask.
