how can i tell what my stock gears are?

russ1979

Member

Oct 6, 2006

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albuquerque, new mexico

Apr 1, 2009

#1

• Apr 1, 2009

• #1

after 217,000 miles i'm going to be changing the rear gears and adding 31 spline axles to my 88 gt. i plain on putting in 3.73's but i would like to know what is in there now. the car is almost all stock (short throw shifter, cold air and alum. drive shaft.) so i know the rear gears are the one's that ford put in.

does anybody have a Vin decoder or know where i can find out what gears i have
thanks

 

KamiKaziDK

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May 16, 2005

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Mesa, Az

Apr 1, 2009

#2

• Apr 1, 2009

• #2

You can either pull the numbers off the tag that's on your pumpkin....or you can measure how many times the driveshaft spins when you turn your wheels

 

Beasty306GT

Active Member

Dec 19, 2002

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Oxford,Mass

Apr 1, 2009

#3

• Apr 1, 2009

• #3

KamiKaziDK said:

You can either pull the numbers off the tag that's on your pumpkin....or you can measure how many times the driveshaft spins when you turn your wheels

Click to expand...

+1

 

wythors

Get off my lawn!!!

Founding Member

May 17, 2000

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C Addle

Apr 1, 2009

#4

• Apr 1, 2009

• #4

Look at the tag on your door. It should look something like this:



Note in the lower right corner is a box marked AX for axle. Let me know what the axle code is and I can tell you what ratio your car left the factory with.

 

russ1979

Member

Oct 6, 2006

152

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albuquerque, new mexico

Apr 1, 2009

#5

• Apr 1, 2009

• #5

in the ax box there is a Z

 

Chuckman

GTFO you fat, heavy bastard

15 Year Member

Oct 21, 2005

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st. louis, mo

Apr 1, 2009

#6

• Apr 1, 2009

• #6

z is a 3.08:1 ratio (1988 Mustang GT Decoder Form)

 

russ1979

Member

Oct 6, 2006

152

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albuquerque, new mexico

Apr 1, 2009

#7

• Apr 1, 2009

• #7

sweet thanks guys

 

KamiKaziDK

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May 16, 2005

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Mesa, Az

Apr 1, 2009

#8

• Apr 1, 2009

• #8

only problem with door tags is that possibly the gears were changed at some point...but generally that's not the case

 

bubba-dough

Active Member

Dec 28, 2004

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Indiana

Apr 1, 2009

#9

• Apr 1, 2009

• #9

KamiKaziDK said:

only problem with door tags is that possibly the gears were changed at some point...but generally that's not the case

Click to expand...

+1 or the door was changed. The best way to tell is jack the rear up and count the number of times the driveshaft turns compared to the tire.

 

HISSIN50

"How long does it take to get help in here?

15 Year Member

Nov 29, 1999

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Apr 1, 2009

#10

• Apr 1, 2009

• #10

bubba-dough said:

+1 or the door was changed. The best way to tell is jack the rear up and count the number of times the driveshaft turns compared to the tire.

Click to expand...

+ 2. You can never assume anything about what gear ratio you have.

 

russ1979

Member

Oct 6, 2006

152

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16

albuquerque, new mexico

Apr 2, 2009

#11

• Apr 2, 2009

• #11

the car is stock save a alum driveshaft, and cold air