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Old 01-06-2015, 10:58 PM   #36
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Thanks derlink for the input. Yeah already have a tune and just want to get some gears. Just need more get up and go from low end. Also did you say you had 3.31s put in? If so and don't mind me asking did you get them from ford or website? And how much did you spend all together? Again if you don't mind me asking lol Really want gears


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Old 01-06-2015, 11:22 PM   #37
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Welcome! Yes, I have 3.31's and am happy with them. I think 3.55's would have been perfect or maybe it is just me and I got used to the 3.31's so fast. Now I just want more and more,lol! I first wanted to get the 3.55 gear kit from American Muscle but it was out of stock. So I ordered all the parts individually and in the last moment changed my mind and went with the 3.31's. I read a lot about gears and figured that Ford putting them in their Performance Package couldn't be wrong and I somehow love the mpg that V6 can get and didn't want to sacrifice that much. I got Ford Racing Gears, as I read that they are not likely to whine. I was very lucky as a friend and expert did it at the cost of lunch. I have zero whine. Get gears, it is well worth it!
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Old 01-06-2015, 11:46 PM   #38
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Cool thanks for the help. So the 3.31s vs the stock 2.73 was a good improvement at first until you craved more torque? Lol I think that's how everyone feels always wanting more power and torque even if it a gt.


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Old 01-07-2015, 08:34 AM   #39
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3.55s may be perfect for you. They are not too long and not too short. You wanna make sure you get the right thing the first time as gears aren't super cheap.
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Old 01-07-2015, 09:11 AM   #40
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Yeah I agree Kevin that's why I wanted to ask for some opinions


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Old 01-07-2015, 09:41 AM   #41
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Derklink have you run the Bama race tune at all with 3.31 gears? If so what is the get up and go with that? I know that the Bama street tune focuses more on lower end power. I'm still on the fence between 3.31 vs 3.55. I'm moving back to an area where I might have to do a little more highway travel. I want more get up and go overall but if I have to start using the highway more don't want to kill mpg


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Old 01-07-2015, 10:51 AM   #42
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if you are going to get a gear upgrade its not really worth getting 3.31 gears. I would get either 3.55 or 3.73 gears. My mpg actually stayed almost the same as the stock 2.73 gears with the 3.73 gears the only difference is your highway mileage will go down some but not bad. Also a tune with your gears will make your car a beast. Tune and gears are the biggest improvement for our V6. I was debating on which gear to go with because of people saying MPG goes down. Most people tend to exaggerate the MPG going down. If i had to do it over again I would have gotten 3.90 gears instead of my 3.73 gears.
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Old 01-07-2015, 11:14 AM   #43
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Okay thank you for the advice. If I were to get 3.55s is that something I could get from ford and have them install or no? If not, obviously I would have to get them online and what all would I need to get for install and what kind of shops are trustworthy?


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Old 01-07-2015, 11:22 AM   #44
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Mr Smith. I have the 3.31 (did drive 2.73) and it's a big improvement. If I could pick any I'd go with 3.55 or 3.73 (think I'd prefer 3.73). I don't do a lot of hwy and the mpg drop would be ok for me. just to reference 2100 rpm = 70 mph. The problem with trying to get a dealer to do it is Ford does not support anything other than 2.73 or 3.31 in the V6 so you'll have to get a tune (yeah I read you do have one already) which brings up wtty concerns.

edit, I see this is an old thread just to clarify mine is a manual....
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Old 01-07-2015, 12:54 PM   #45
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dont ever have a ford dealer install your gears you are looking at $800-$1200 just in labor which is a massive rip off. I was quoted $1100 for labor to get my gear installed. I had a local muscle car shop install my gears for $350. $300-$500 is a good price for labor to have your gears installed. You will need the Gear and Pinion, install kit with shims, 3 quarts of gear oil 75W140, axle bearing kit, and depending on which gear oil you get you might need Ford Ficition Modifier to mix in with your gear oil to reduce gear whine. Depending on your year mustang you have either the 7.5inch or 8.8 inch rear end so you need the correct 3.55 gears for your year car. Go on AmericanMuscle.com to find out what size rear end you have. If you have a 2011 and newer mustang you have a 8.8 in rear end regardless of model or engine size. The 2005-2010 i think varies or is all 7.5 inch not 100% sure.

After you have your gears installed between 450-550 miles you want to get rid of the gear oil in the rear end because the new gears will leave metals etc in the gear oil. I would change it out no more then 650 miles. So plan on getting 6 quarts total of gear oil. 3 quarts needed for new gear break in and 3 more quarts to flush out the gear oil after 450-550 miles of driving with the new gears installed. 75w140 Royal Purple or Amsoil Severe Gear are two very good gear oils to go with. Allow 100-150 miles of gear break in before you stomp on the pedal to test the new gears out.
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Old 01-07-2015, 01:18 PM   #46
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My '13 has the 18" rims and automatic. This past summer I had 4.10 gears installed. Lauches like a rocket. Here are my real world numbers: I lost 1 mpg in town. I get around 18. On the highway I dropped from 24 to 21.something. I had the 2.71 stock gears when purchased. I drive my stang only about 8 months a year. I dont mind the loss of mileage. The faster take off is well worth it to me.
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Old 01-07-2015, 02:10 PM   #47
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dont ever have a ford dealer install your gears you are looking at $800-$1200 just in labor which is a massive rip off. I was quoted $1100 for labor to get my gear installed. I had a local muscle car shop install my gears for $350. $300-$500 is a good price for labor to have your gears installed. You will need the Gear and Pinion, install kit with shims, 3 quarts of gear oil 75W140, axle bearing kit, and depending on which gear oil you get you might need Ford Ficition Modifier to mix in with your gear oil to reduce gear whine. Depending on your year mustang you have either the 7.5inch or 8.8 inch rear end so you need the correct 3.55 gears for your year car. Go on AmericanMuscle.com to find out what size rear end you have. If you have a 2011 and newer mustang you have a 8.8 in rear end regardless of model or engine size. The 2005-2010 i think varies or is all 7.5 inch not 100% sure.

After you have your gears installed between 450-550 miles you want to get rid of the gear oil in the rear end because the new gears will leave metals etc in the gear oil. I would change it out no more then 650 miles. So plan on getting 6 quarts total of gear oil. 3 quarts needed for new gear break in and 3 more quarts to flush out the gear oil after 450-550 miles of driving with the new gears installed. 75w140 Royal Purple or Amsoil Severe Gear are two very good gear oils to go with. Allow 100-150 miles of gear break in before you stomp on the pedal to test the new gears out.
The dealerships are butt rapping people on gear installs. Never ever ever would i use them. I paid 289 for my gear install and that was from a mechanic that dealt with performance installs. The stealerships wanted 800 dollars for my gear install.

I actually asked the service department rep if they were going to use anal lube with the install. F that bro.
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Old 01-07-2015, 02:25 PM   #48
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@willb2305: I had only 2 quarts of gear oil + friction modifier put in and was told changing the oil is not necessary. This came from a mechanical engineer who today developes superchargers for a living, owned several Mustangs and built a '73 'cuda when he was 16. Should I have a word with him?
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Old 01-07-2015, 02:44 PM   #49
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@smith: Gears don't give you more torque (the tune will), they just get you up in the power band faster. Yes, in my opinion 3.31's over 2.73's are a good improvement but I can only tell in combination with a tune. So far, I have only tried the street and performance tune. For city driving, the street tune is just right as it helps with lower rpms. The performance tune is good for highway driving, especially when accelerating while passing at higher rpms. I will check out the race tune in spring/when it gets warmer. Also asked Bama for the hybrid tune, which I heard is the best of both worlds. Haven't heard back from them yet. All depends on what your plans are with the car and what kind of person you are. As mine is my only car, I wanted something very usable for DD but still fun at the same time. I have to say I am also more of a "quick cruiser" than a racer. If I were you, I would go 3.55's and no regrets.
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Old 01-07-2015, 02:57 PM   #50
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Gears are cheap, the labor is not. You can get a set of gears for 199.99 but the install is like 500 to 700


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Old 01-07-2015, 04:28 PM   #51
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Thanks guys for the feed back. I will definitely stay away from a dealership then.


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Old 01-07-2015, 04:35 PM   #52
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Also someone said they didn't know the use of my car and it's a daily driver no racing just hate the 2.73 gears. Want to have some fun with my mustang lol It's a joke that ford put in 2.73s to begin with. Listening to the 3.31 guys ford shouldn't have put in anything less than 3.31s but I guess that's how they got there "awesome" mpg #'s from a motor with 305hp


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Old 01-07-2015, 04:40 PM   #53
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Also derklink in my experience I was not very impressed with the hybrid tune. Could be just me and my thoughts on it. And since you have 3.31s and I have the 2.73s that could play a part I'm not quite sure.


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Old 01-07-2015, 05:42 PM   #54
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yea, probably right, smith. Thanks for the heads up, I will see when I finally get it, lol. Ok, waiting for about a week now. One more thing about mpg...drove about 500 miles on highway over xmas, between 70 and 80 mph. I got 25 mpg. Maybe it was the temperature or the extra weight of presents, clothes, my gf, lol. With just me, the 2.73's and no tune in October I got about 28 mpg. Just sayin'. I once went bone stock and with the horrible 215/65/17 tires at 60 to 65 mph and got just to 30 mpg. Never made the advertised 31, lol
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Old 01-07-2015, 05:46 PM   #55
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Haha that's funny


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Old 01-07-2015, 05:50 PM   #56
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Also what kinds of mods do you have? Just wondering? And did you say you have auto or standard?


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Old 01-07-2015, 05:52 PM   #57
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Haha that's funny


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[ATTACH]173104[/ATTAC

This is my best all interstate 68-72mph. 89 octane non ethanol can easily get 30-31 72-75mph


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Old 01-07-2015, 05:58 PM   #58
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Do you have gears bigshow14?


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Old 01-07-2015, 05:59 PM   #59
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I have an auto
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Old 01-07-2015, 06:02 PM   #60
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I'm a cheapskate riding on 87, lol
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Old 01-07-2015, 06:03 PM   #61
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Do you have gears bigshow14?


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Stock 2.73 if I change them it will be for 3.15's I have a manual trans


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Old 01-07-2015, 06:32 PM   #62
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If you don't mind me asking why 3.15s?


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Old 01-07-2015, 06:46 PM   #63
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If you don't mind me asking why 3.15s?


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Well with the manual and 2.73 the car actually runs pretty good. I goofed with a friend of mine with a 2011 manual with 3.31 and it was close in 1st and 2nd and I actually pulled him in 3rd. The car could use a slight gear bump to help around town. Lower gears in a manual car benefit when using drag radials or slicks to give you a good 60ft.
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Old 01-07-2015, 06:50 PM   #64
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Gotcha


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Old 01-07-2015, 06:54 PM   #65
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Derklink nothing wrong with running 87 lol tune still makes a difference


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Old 01-07-2015, 07:06 PM   #66
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Well with the manual and 2.73 the car actually runs pretty good. I goofed with a friend of mine with a 2011 manual with 3.31 and it was close in 1st and 2nd and I actually pulled him in 3rd. The car could use a slight gear bump to help around town. Lower gears in a manual car benefit when using drag radials or slicks to give you a good 60ft.
Do you plan to stay NA?

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Old 01-07-2015, 07:11 PM   #67
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Do you plan to stay NA?

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Yea just going to do some bolt ons.
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Old 01-07-2015, 07:28 PM   #68
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Yea just going to do some bolt ons.
Right on, that's pretty much the only gear that I have zero seat time in. My only regret with my 3.73s is that I plan on a S/C and I'm afraid its going to be just to much gear and I'll have to go down to 3.31s or 3.15s. But I still need to do the ds and complete my suspension before I pro charge Lol.

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