How do I know what gears I have...

[68 Stang 19]

I bought a used 2015 GT 6 speed with the 400a package...did these cars come stock with 3.31? Thanks...

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[Akalogianis]

Yes they come with the 3.31, check your window sticker if you kept it or look up your car on cotus website

 

[Zemedici]

VIN
Window sticker
Door Tag
Axle Tag
Spin driveshaft and wheel - count rotations

 

[68 Stang 19]

I bought it used so no window sticker but will check the door label...thanks

 

[GTBOB]

There is a sticker on the diff housing that says what ratio you have (if yours still has it). Mine has 355 on it which matches my window sticker.

 

[IvanCRF]

Also, if you open the driver's side door at look at the door sill, you will see a small rectangular sticker. Under axle, it will have a axle code. Mine says "DD" which is the 3.55 code.

GG means 3.31
BB means 3.73

 

[68 Stang 19]

Perfect...thanks a lot for the info...I found out I have GG on my door label so I have the 3.31 gears. Has anyone switched out their gears on these cars yet?

 

[2015 Silver GT]

Perfect...thanks a lot for the info...I found out I have GG on my door label so I have the 3.31 gears. Has anyone switched out their gears on these cars yet?

Why, what's wrong with the 3.31's? Many actually prefer them.

 

[D.Brown]

I thought for sure that I had 3.15's. There's nothing on my window sticker indicating my gear ratio, but my Axle Code is GG in the door. I'm officially confused.

 

[Ecoboosted]

I thought for sure that I had 3.15's. There's nothing on my window sticker indicating my gear ratio, but my Axle Code is GG in the door. I'm officially confused.

I think 3.15's are the automatics.

 

[D.Brown]

That makes sense. Thank you sir.

 

[2015 Silver GT]

I think 3.15's are the automatics.

Correct with 3.55's being an option.

 

[Ecoboosted]

Correct with 3.55's being an option.

Also 3.31's for base gearing manual, 3.55's are an option or 3.73's with the Performance Pack manual.

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