When I was buying my car, they had the same one with 3.73 rear differential gears already installed - but I thought I'd save the $300 and go with the stock 2.73. I regret that now because I think the 3.73 would have added a serious amount of torque.

I am contemplating buying the part from American Muscle. Does anyone know how much it would cost to install at a shop? Should I just have my dealer install so it can be kept in warranty?

Thanks!

 

Let Dealer install it, so they can adjust the ECU for it.. so your speedo will be correct. As long as u get 3.73 gears they can do it.

 

I had mine installed from a Ford racing dealership and just labor was 800.00 and change, not including parts and gear oil and tuned. All together with tax it was about 1500.00 . You get it done for half that you go to a outside shop. But if you don't want to void the warranty, you gotta pay the price. Buy the way , I almost forgot, you also have to buy the Pro Cal tuner to tune the speedo.

 

Most shops in my area get about $500-$600 with gears and speedo correction. For a good shop this is a basic job. A dealer is going to charge more the poster above got ripped imho. Dez racing rebuilt my entire rear end with a new diff, gears, master kit and axles for over what he paid just for gears

 

Also since I used the Pro Cal tuner for the gears, for a few more dollars I had them put in a K&N filter with the Pro Cal performance tune.

 

lol so in other words, i should have bought the one with 3.73 off the lot!! my salesman said, if you're not racing, you don't need the 3.73. what a total noob i am.

i'll try to get a few quotes next week. i'm leaning towards getting the dealer to do the work so it stays under warranty, but the $1500 tag seems really high. i don't even need a new diff since it's only a month old, so i was hoping the cost would stay in the $500-$700 range.

:fingers crossed:

 

Exactly !!!!! But in my case, the factory does not install 3.73 or even 3.55 in a convertible. The 3.31 was the highest they would go from the factory. It has to something with more torque and possibly twisting the frame since the car has no top. Later finding out from Ford Racing, the factory was just being over conscious . And there it is . Done.

 

I had my dealer install my 3.73 gears (Ford Racing) i ordered from American Muscle. Gears, labor, all new bearings and seals and two lube changes (i did the second 500 mile change myself) was right around $1,000.

I went from 3.31 to 3.73 gears. Worth every cent. 60 m.p.h. is right around 2,000 r.p.m.

 

If your like me and want to go all the way, you might want to change your stock axle cover to a FORD RACING AXLE COVER. Here's the link....
http://www.fordracingparts.com/parts...tKeyField=9291 They gotta remove the stock one anyway. Find a Ford Racing dealership nearest and they will have all the parts, gears cover and all.

 

thinking back, i think that other car was not 3.73, it was 3.31. looking at it that way, i would have wanted to change the gears anyway. ok i feel a little better. lol

 

If you want a bump in off the line feel over your taller gears but still have decent gas mileage have you thought about 3.27s. Don't knock the 3.27s they are a great gear also. It maybe the going rate out your guys way but really a grand for a gear install is just plain crazy.

 

our cars come with 3.15s manual , i thought, 3.31s auto

 

Your probably right. 3.73's are specialy ordered as option by the customer and there are not too many out there sitting in the lot. They're mostly 3.31's or may be even 3.55's and the higher gear ratios are manuals only, unless modified afterwards.

 

the 3.31 is standard on the GT, but I have a V6

 

Our V-6's only have 2.73 or 3.31 gear ratio's offered from the factory.

 

yup, i have 2.73 but looking to install the 3.73 ford racing gears.

 

3.31 for manual GT, 3.15 for Auto GT

 

See above post

 

Yes get your 3.73 Ford Racing gears with your new heels....HOT !!!!! LOL !!!!!!

 

I don't have a GT so this really doesn't concern me. But thank you for the info, I'm sure someone will find it helpful.

See first post?

LOL Heels are a woman's version of torque. Force/power with every step.