hey all I just got my mustang a few months ago. I have a question on the rear axle cover I found a sticker that has 3.55 on it what is the stock for a 2005 GT, and is the stock gear cover unpainted steel or aluminum. see I bought my car with 51,000 miles on it and the dealer made no mention of any improvements. any help would be greatly appreciated.

 

yes stock the 2005 gt has 3:55 gears, but that dont mean anything if they did a gear swap and put the cover back on with out ripping the sticker off. gear swaps for this car is a hot item, so make sure it is actually a 3:55 ratio. As for color i believe it is unpainted aluminum but dont quote me on that. when you change your gear oil make sure you go to ford and get a little bottle of limited slip additive(motorcraft brand ofcourse) because its to make sure that your rearend dont lock up. this you have to perform every time you change your gear fluid, its very important. Make sure you add the additive first then the gear oil of your choice and stay synthetic with the gear oil. anymore question please ask away i have a 2005 gt as well that i have had since febuary of 2005 and i know this car pretty good top to bottom.

 

**** I thought I lucked out. is the h pipe stock for the gt?

 

yes it is stock for gt models

 

Yup

 

you almost beat me to it. lol

 

Yup, 3.55 L/S is stock for 2005-2006 GT 5M models. It became an option for the GT 5M cars sometime in 2007.

 

Yah,

I ain't so happy about the 3:31s on the 08s !!

 

better mpg's?

 

I suppose, but being that I live only 6 miles from work, that's not my priority! I'm looking into some 3.73s...

 

yep, 3.31 would get marginally better mileage on the highway than the 3.55. In town, it would all depend on the driver (with a 5-speed manual).

My 1987 Mustang GT had a 2.73 axle, believe it or not. A 3.08 was optional on the 5M, standard on the automatic. In these times of fuel consciousness, I'm surprised that Ford doesn't offer a 2.73 "economy" axle as an option -- the car should get close to 30 mpg highway with that ratio.

 

in my opinion, i dont care much about the gas mileage due to the fact that my car is not a daily driver. I ripped out those 3.55's and put in some 4.10's and im loving it.

hey does anyone think stepping it up to a 4.30 ratio would be streetable? is that too muchfor for the vehicle?