Results 1 to 8 of 8

Gear Ratio Locator

This is a discussion on Gear Ratio Locator within the Automatic Transmission forums, part of the Drivetrain category; Where can I go to use my VIN# to find out what Stock Gear Ratio I have? I have a ...

  1. #1
    Junior Member
    Join Date
    Jan 2006
    Location
    Columbus, OH
    Age
    36
    Posts
    26

    Red
    2000 Trans AM

    Gear Ratio Locator

    Where can I go to use my VIN# to find out what Stock Gear Ratio I have? I have a 2000 Trans Am Automatic and I thought it was 3.23 but a lot of people said I might have a 3.73 stock.

    Thanks in Advance

  2. #2
    Impounded
    Join Date
    Oct 2007
    Location
    Beaver Dam KY
    Posts
    7,746

    79 T/A -91 Firebird
    1998 Trans Am -Oynx Black

    You can find out by looking at your door.

    Look for GU5

    273s
    323s are the only ones in a4 t/as

  3. #3
    Moderator 35th-ANV-SS's Avatar
    Join Date
    Oct 2008
    Location
    Wherever life takes me
    Posts
    12,465

    Red
    02 35th LE Camaro SS

    I thought the OEM gear ratio on your car was 3.23. M6 cars would have a 3.42

    http://www.firehawkowners.com/options/make/1.html

    Work your way around this website, you may be able to find what you are looking for.

  4. #4
    Impounded
    Join Date
    Oct 2007
    Location
    Beaver Dam KY
    Posts
    7,746

    79 T/A -91 Firebird
    1998 Trans Am -Oynx Black

    On base trans am the ratio was 2.73 but you could upgrade to a 3.23 performance axle.

    3.73s didnt come in any 4th gens stock.

  5. #5
    Junior Member
    Join Date
    Jan 2006
    Location
    Columbus, OH
    Age
    36
    Posts
    26

    Red
    2000 Trans AM

    Ok so what I found out when I called SLP was if your door code is GU2 you have 2.73 gears and GU5 is 3.23 gears. None of the 4th generation cars came with 3.73 gears. If you have the GU2 code, as I do, you still can upgrade clear to 3.73 but you need a bigger housing cost. I was told to contact JT Differential or Just Differential.

  6. #6
    Impounded
    Join Date
    Oct 2007
    Location
    Beaver Dam KY
    Posts
    7,746

    79 T/A -91 Firebird
    1998 Trans Am -Oynx Black

    Quote Originally Posted by rockyiv806 View Post
    Ok so what I found out when I called SLP was if your door code is GU2 you have 2.73 gears and GU5 is 3.23 gears. None of the 4th generation cars came with 3.73 gears. If you have the GU2 code, as I do, you still can upgrade clear to 3.73 but you need a bigger housing cost. I was told to contact JT Differential or Just Differential.
    And that is BS.


    You can buy gears alone and be fine.

    SLP is the worst company ever

  7. #7
    Junior Member
    Join Date
    Jan 2006
    Location
    Columbus, OH
    Age
    36
    Posts
    26

    Red
    2000 Trans AM

    Quote Originally Posted by JoshieDoom View Post
    And that is BS.


    You can buy gears alone and be fine.

    SLP is the worst company ever
    Were they at least right about the GU2 being 2.73 and the GU5 being the 3.23?

  8. #8
    Impounded
    Join Date
    Oct 2007
    Location
    Beaver Dam KY
    Posts
    7,746

    79 T/A -91 Firebird
    1998 Trans Am -Oynx Black

    Quote Originally Posted by rockyiv806 View Post
    Were they at least right about the GU2 being 2.73 and the GU5 being the 3.23?
    Yeah, that is in the stickies and about 600 threads.

    A ring gear/installation kit is all that is needed for the gear swap.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Gear ratio and RPM's
    By vannatte in forum General Help
    Replies: 16
    Last Post: 08-17-2009, 09:24 PM
  2. gear ratio's
    By Team Villan in forum Drivetrain
    Replies: 7
    Last Post: 07-28-2008, 11:32 AM
  3. Gear ratio vs. take-off
    By slade8200 in forum Drivetrain
    Replies: 5
    Last Post: 04-14-2007, 06:24 PM
  4. Gear Ratio
    By enjun in forum Drivetrain
    Replies: 1
    Last Post: 01-15-2007, 01:57 AM
  5. 3.42 gear ratio
    By larryndog in forum Drivetrain
    Replies: 1
    Last Post: 10-04-2006, 01:45 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •