Results 1 to 9 of 9

3.90's on a DD

This is a discussion on 3.90's on a DD within the Automatic Transmission forums, part of the Drivetrain category; I have seen a set of 3.90 gears for a 99 Z28. I was wondering how streetable it would be ...

  1. #1
    Member SKULLZ's Avatar
    Join Date
    Aug 2005
    Location
    Colorado
    Age
    31
    Posts
    114

    Black
    1999 Z28 Camaro

    3.90's on a DD

    I have seen a set of 3.90 gears for a 99 Z28. I was wondering how streetable it would be with a 3000 stall. I was planning on 3.73s until i saw these.

  2. #2
    Junior Member MNR-0's Avatar
    Join Date
    Aug 2005
    Location
    Australia
    Age
    48
    Posts
    80

    BLACK
    2004 Monaro

    Very streetable - more so than 3.73. Very little diff. on the freeway between these 2 - but big diff in off-the-line response.

  3. #3
    Senior Member ninobrn99's Avatar
    Join Date
    Aug 2003
    Location
    Honolulu HI
    Age
    34
    Posts
    2,486

    Pewter
    all bore 370 Trans Am

    if you have a stock 10 bolt, they dont make 3.90's for it. I have 3.89's in my 9" and they're not bad. its a m6 though.

  4. #4
    Member keliente's Avatar
    Join Date
    Aug 2005
    Location
    Charlotte, NC
    Age
    33
    Posts
    723
    99 Firebird Formula

    There are no 3.90s for a 10 bolt. I have them in my 12, though.

  5. #5
    Member SKULLZ's Avatar
    Join Date
    Aug 2005
    Location
    Colorado
    Age
    31
    Posts
    114

    Black
    1999 Z28 Camaro

    69-G875390 Motive Performance Gears, 3.90 Gear Ratio, 3 series carrier, GM 7.5" 10 bolt rear end

    this is what I saw on thunderracing.com, for a 98-2002 camaro/f-body


  6. #6
    The VCBoiz
    Join Date
    Aug 2005
    Location
    Houston
    Age
    43
    Posts
    75

    Pewter SS
    2001

    Quote Originally Posted by SKULLZ
    69-G875390 Motive Performance Gears, 3.90 Gear Ratio, 3 series carrier, GM 7.5" 10 bolt rear end

    this is what I saw on thunderracing.com, for a 98-2002 camaro/f-body


    Holy crap this better be for real. It's on there website for sure. I'm calling them tomorrow.

  7. #7
    Junior Member
    Join Date
    Oct 2005
    Location
    Abilene, Tx
    Age
    30
    Posts
    75
    Quote Originally Posted by MNR-0
    Very streetable - more so than 3.73. Very little diff. on the freeway between these 2 - but big diff in off-the-line response.
    so, 3.90 is better off of the line, and almost as good on the highway? Y do people get 3.73's?

    -sorry, i don't know anything

  8. #8
    Story of My Life!! BIG D's SS's Avatar
    Join Date
    Aug 2005
    Location
    Commerce Ga
    Age
    40
    Posts
    4,995

    Black, Blue
    07 TBSS, 07 GSXR1000

    The 3.90s was suppose to be released this soring for a GM 10 bolt. I haven't looked but I know they are suppose to be out.

  9. #9
    Member keliente's Avatar
    Join Date
    Aug 2005
    Location
    Charlotte, NC
    Age
    33
    Posts
    723
    99 Firebird Formula

    I've been driving on them in my 12 for a week, it's a great compromise between 4.10 and 3.73.

Thread Information

Users Browsing this Thread

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

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
  •