here's a question for everyone,..I acquired a 91GT Aod and noticed the rear was/hadbeen changed. It has discs but still it is a four lug rear, 3.55 ratio.
I really didn't think that stangs came with discs until 94 which they also upgraded to 5-lug. My friends think this is a 93 Cobra rear end. Does anyone know whether or not rear disc brakes were available with 4-lug 93 or older set up?

 

If I am not mistaken all of the v-8 stang from 86 on had 8.8 rears... Please correct me if I am wrong.

 

there are 2 ways, there is an ID tag on every rear. that might be hard to read so hear is what i recomend to do,you need 2 people jack the back of your car up. put it in nutral with the e-brake off, block the one tire so that when you spin it they both spin in the same direction, get one of you buddies to craw underneath and watch the drive shaft, market in on the driveshaft and the rear with white out or something, then spin the tire one full rotation and count how many times the drive shaft turns. it won't be exact but it will be close this should give you some idea of ur gears. if you don't know what the ratio's mean like a 3.55 it means the drive shaft turns 3.55 revulutions for every one turn of the tire.

 

4:10s all the way!!! Have fun...

 

is this a job better left to the professionals?

 

so is it usually about 150 or so then to get them put in?

 

I believe the 7.5 rearend was replaced in 87 with a 8" in all fox body mustang

[IMG]local://upfiles/10267/CF00C2A7C49248E1858CA1CC1C424A76.jpg[/IMG]

 

why not just look at the ID tag on the driver's door. What letter is there?
I forget the codes offhand but I can find out if you tell me what the code is.

 

i hate to sound like a complete noob, but can someone clear up the whole "low end" and "top end" performance..i think i have a pretty good idea about what it means..but im better off hearin it from guys who actually know what they're talkin about

thanks

 

top end means you will have more power and torques in the upper rpm range and you will have more top end if you ever get the chance to top out your car. (unlikely) low end means you will have more grunt off the line.