what is the stock rear end gear ratio in a 89 mustang gt?

Question

it has a T5 5 speed and a 5.0

Answer 1

right around 2.9 and they have a big overdrive gear that drops the final ratio to under 2.6

Answer 2

You have 3 options...

1) If you ever wondered what gears your car has stock. Look at the door tag inside the driver side door. this applies only to the 86-95 5.0

Where it says AX on the far right on the bottom it will say 1 of the following 3 letters. M,Z and E.

M=2.73:1
Z=3.08:1
E=3.27:1

Obviously your door tag has to be intact to be able to get the info this way.

2) Theirs also usually a metal tag on the rear diff cover held down by one of the diff cover bolts, in case your door sticker is gone.

3)if you dont have either of those jack up the car, mark a line on the rear tire it dose not matter which side, then make a mark on the driveshaft, rotate the tire one full turn while counting how many times the driveshaft goes around.
i.e. .....
3 1/4 turns of the driveshaft - 3.27

4 1/10 turns = 4.10

3 3/4 turns = 3.73

I hope this helps. Good luck!

Answer 3

Mustang 89

Answer 4

The standard ratio for a 5-speed was 2.73. The option was 3.08. Automatic cars had the 3.27.

Answer 5

if my memory serves me right they had a 3:55 ratio
its been a while since i have worked on one,

Answer 6

usually 2.73 sometimes 3.10

Answer 7

I believe they were either 3.55 or 3.73 ratios.