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Old 01-31-2014, 02:50 AM   #36
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Noob question.
So how does the tire, rims and gears related? Can someone please explain to me?
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Old 01-31-2014, 08:44 AM   #37
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The tire on your car and your rear gear ratio work together. Change either one and you change the effective gear ratio. 2.73 gear means the driveshaft turns 2 3/4 times to make the tire revolve once. A 4.10 gear means the driveshaft turns 4 1/8th times to turn the tire once. Same speed, but more rpm. This assumes the tire diameter stays the same. A smaller tire than what came on the car will require still more turns to go the same distance as a larger tire. Every tire made has a number that totals the revolutions per mile. Ride a bike, change gears and see when it becomes easier to pedal, note you don't go very fast. Why? That's a low gear. Power to go up hill but no speed. What bike is faster, one with 20" tires or one with 28" tires? Which one is easier to get up to speed? There are U tube tutorials on how gears and differentials work. Take the time and watch a few.
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Old 01-31-2014, 08:46 AM   #38
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Quote:
Originally Posted by sunnytan06 View Post
Noob question.
So how does the tire, rims and gears related? Can someone please explain to me?
It is all about how many rotations of the drive shaft it takes to move your car so far. In 4.10 gears, it takes a little more than four rotations to move the wheel/tire one revolution. Taller tire/wheel combo will move the car more feet in one revolution.[higher top speed] A smaller tire/wheel will provide more torque to the pavement.[quicker acceleration]

See if this helps to understand it?
HowStuffWorks "Gear Ratio and Tire Size Chart"
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Old 01-31-2014, 09:15 AM   #39
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So if I am planning on getting a bigger rim. My gear ratio will have different effect so probably 3.73 will not be as effective as 4.10?
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Old 01-31-2014, 09:40 AM   #40
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Originally Posted by sunnytan06 View Post
So if I am planning on getting a bigger rim. My gear ratio will have different effect so probably 3.73 will not be as effective as 4.10?
Its more than just the rim, many larger rims have smaller profile "thin" tires. It is about the total diameter of the rim and tire together.
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Old 01-31-2014, 09:52 AM   #41
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Talking to you taught me a lot
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Old 01-31-2014, 11:56 AM   #42
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If one has traction issues with the 4:10 gears that's an easy fix. Just install some LCA's and better tires. Traction problem solved.
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Old 03-06-2017, 07:09 PM   #43
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My son told me that if I put in the 4:10 Ford Racing Gears, that as long as I was not driving the car at a high top speed that the factory driveshaft is okay, is this correct? Can the stock drive shaft handle the quick acceleration? Thanks everyone for your replies!
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Old 03-07-2017, 06:14 AM   #44
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My son told me that if I put in the 4:10 Ford Racing Gears, that as long as I was not driving the car at a high top speed that the factory driveshaft is okay, is this correct? Can the stock drive shaft handle the quick acceleration? Thanks everyone for your replies!
I wouldn't go over 100 mph.

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Old 03-07-2017, 07:13 AM   #45
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^^This^^
For normal highway and daily driving the Oem shaft is fine, but as David stated I wouldn't go over 100mph as well.

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Old 03-09-2017, 01:07 PM   #46
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^^This^^
For normal highway and daily driving the Oem shaft is fine, but as David stated I wouldn't go over 100mph as well.

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After a little more research, I think since the car is a manual transmission, I should just go with the 3.73 gear. I definitely will never be driving the car over 100 MPH but I've read there are other benefits to having a lighter weight one piece aluminum shaft, so I'm still thinking about doing it anyway.
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Old 03-09-2017, 01:19 PM   #47
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As a manual V6 owner with the solid aluminum drive shaft (American Muscle) and 3.73 (Ford Racing purchased through AM) gears, I've been very happy with the setup. I do have some tunes that for track days remove the speed limiter and it's very nice to have the piece of mind my drive shaft isn't going to fly apart.

I haven't been on a track with a long enough straight to hit higher than 120 mph, but the car with this combination performs very solidly.

On some autocross tracks that skirt the longest allowed straight, the 3.73:1 gears are not ideal. For that 3.5 or so would be much better as otherwise second gear is hovering near at in the redline area and third is too high for tiny hairpin turns. In autocross you really don't want to have to waste time shifting up and down. I wouldn't mention this but I have had the computer cut in and shut me down for revving too high for too long there.

However for big tracks and even daily driving, 3:73 seems perfect for me. You aren't going to run out of gear before you hit your top end, either, as far as I can tell.
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Old 03-09-2017, 01:22 PM   #48
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I don't look at the speedo much while on the track, but if it matters to you, I think I was still in 4th gear at around 110-115 mph before I shifted to 5th.
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Old 03-09-2017, 03:46 PM   #49
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As a manual V6 owner with the solid aluminum drive shaft (American Muscle) and 3.73 (Ford Racing purchased through AM) gears, I've been very happy with the setup. I do have some tunes that for track days remove the speed limiter and it's very nice to have the piece of mind my drive shaft isn't going to fly apart.
Looks like they sell two of them, one is 60.00 more. Does it matter which one?

The Driveshaft Shop One Piece Mustang Driveshaft - Aluminum FDSH19-A (11-14 V6) - Free Shipping

SR Performance Mustang Aluminum One Piece Driveshaft - Manual 12679 (05-10 V6) - Free Shipping
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Old 03-09-2017, 09:43 PM   #50
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Definitely -- one is for the 2011+ mustangs. The other one may not fit your car.
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Old 03-09-2017, 10:01 PM   #51
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Definitely -- one is for the 2011+ mustangs. The other one may not fit your car.
haha brain fart! That's what I get for working and playing at the same time.
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Old 03-10-2017, 06:21 AM   #52
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Keep in mind the SR Performance driveshaft sold through American Muscle is really an Axle Exchange driveshaft. At least from looking at the pictures and video
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Old 03-10-2017, 08:55 AM   #53
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Keep in mind the SR Performance driveshaft sold through American Muscle is really an Axle Exchange driveshaft. At least from looking at the pictures and video
Maybe not, they don't have a V6 version even listed for sale online. It's common for companies to produce similar products.
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Old 03-11-2017, 06:15 AM   #54
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This? 2010-2014 Mustang Driveshafts | AmericanMuscle | Free Shipping
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Old 03-11-2017, 06:42 AM   #55
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No, read the post again.
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Old 03-11-2017, 09:15 AM   #56
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I have a axel exchange driveshaft i'm selling traded my 3.7 for a 5.0 1500 miles on the shaft if interested
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