AOD 3.73 or 4.10 gear?

unless u have a supercharger and a heavy modified engine I would go with the 4.10's. You wont spin to much tires...espically with a 89 Auto..:-)

Bryan

-17x9 Cobra R's

-275/40/ZR17

-Light Bar

-K & N Filter

-90/100 Watt Ion-Blue Headlights

-Red Calipers all around

Go 4.10's unless your planning on adding a supercharger / nitrous.

Ivge got a 96 vert with the 4.10s and I want more gear!

Well most people recommend 4.10s or 4.30's for the sn-95 mustangs.

I did the 3.27 to 3.73 swap in my 95 and it wasn't very noticeable. About the only really noticeable thing was more noise. lol. Since you have 3.27 I'd go for the 4.10s. You will take a hit on gas mileage on the highway, but town driving may not hurt to bad since it won't have to work so hard to get moving.

MadDAWG

You will feel the difference between these gears. And going to 4.10 or lower will eat into your fuel economy.

The choice is yours.

C8oe

You will feel the difference between these gears.

yes, you'll feel a small difference,unless your ass-o-meter is more sensitive than most.

the only thing I noticed was the noise, and a little quicker to the next fill up.

MadDAWG

The 3.73 worked find in my 88. That and the 2 1/2 back system really popped the cork on the engine. My mileage went down to 18mph. Make sure you change the speed-o drive gear at the trans to get a true mph reading whatever you choose. Make sure you have the right person "shim" the rear gears or you'll be whinned to death driving it.