Results 1 to 11 of 11

Lq4 to turbo 400??????

This is a discussion on Lq4 to turbo 400?????? within the Automatic Transmission forums, part of the Drivetrain category; Doing a engine swap in a Buick grand national from a stage 2 buick to a Lq4 what do I ...

  1. #1
    Junior Member
    Join Date
    May 2008
    Location
    philly suburbs
    Posts
    24

    Black
    1987 BUICK TURBO T

    Lq4 to turbo 400??????

    Doing a engine swap in a Buick grand national from a stage 2 buick to a Lq4 what do I need to change for the trans to bolt up to a turbo 400. I heard something about a spacer any one know about that.

  2. #2
    Junior Member 99SS#20's Avatar
    Join Date
    Sep 2008
    Location
    Gosnell, Ar
    Posts
    54

    Black
    99 Camaro SS

    The original GN had a 200R4 trans with the universal bellhousing (Chevy or BOP). If you have a BOP Turbo 400, you will need an adapter plate to allow the top two bolts of the bellhousing to be used. Try advanced adapters.

  3. #3
    Junior Member
    Join Date
    May 2008
    Location
    philly suburbs
    Posts
    24

    Black
    1987 BUICK TURBO T

    I have a gm t400 what about the spacer for the torque converter were do I get one

  4. #4
    Junior Member 99SS#20's Avatar
    Join Date
    Sep 2008
    Location
    Gosnell, Ar
    Posts
    54

    Black
    99 Camaro SS

    On a BOP (Buick, Olds, Pontiac) trans the top of the bell housing will dip down, Chevy will have a peak. A BOP bellhousing will need an adapter, If you have a Chevy trans, none needed. There are a couple of companies to get an adapter from. Try these links:

    http://www.sfxperformance.com/parts/JET100110.htm

    http://performanceparts.com/part.php...463&dpi=314778

    This is an adapter for the flywheel:

    http://store.summitracing.com/partde...5&autoview=sku

    Some pics of the bell housing and I can tell you exactly what you have.

  5. #5
    Junior Member
    Join Date
    May 2008
    Location
    philly suburbs
    Posts
    24

    Black
    1987 BUICK TURBO T

    I am familiar with the bell housing adapter but I was looking for the flexplate adapter that you linked here.(I wasn't sure what it was being called) What is the deal with them do they just sandwhich between the crank and the flexplate or what?? And thanks so much for the links

  6. #6
    Junior Member 99SS#20's Avatar
    Join Date
    Sep 2008
    Location
    Gosnell, Ar
    Posts
    54

    Black
    99 Camaro SS

    It goes between the crank and the flexplate. It extends through the center of the flexplate and supports the torque converter. I forgot to include a link to the new flexplate, sorry.

    http://www.speedwaymotors.com/p/6767...plate-Kit.html

    The torque converter bolt patterns are slightly different. This will do it.

  7. #7
    Junior Member
    Join Date
    May 2008
    Location
    philly suburbs
    Posts
    24

    Black
    1987 BUICK TURBO T

    Hughes seems to make a SFI LS1 to t350/t400 flexplate that seems to be made in one piece and doesn't need the spacer. Would you happen to know if thats true?? I definatly need the sfi flexplate since my setup will definatly hit the 9's and my stock V6 turbo ovaled out the stock flexplate, let alone a pt-88 Lq4 motor

  8. #8
    Junior Member 99SS#20's Avatar
    Join Date
    Sep 2008
    Location
    Gosnell, Ar
    Posts
    54

    Black
    99 Camaro SS

    I have not seen one in use, do you have a link. Also there are TH400 torque converters that bolt to the Gen 4 flywheels.

  9. #9
    Junior Member
    Join Date
    May 2008
    Location
    philly suburbs
    Posts
    24

    Black
    1987 BUICK TURBO T

    I was wrong about the flexplate from hughes. It also needs the spacer. I was hoping not to change the converter but I think my 5500 stahl will be way to much for a pt-88 4blt on a lq4 any one know it will be hardly street driven

  10. #10
    Junior Member
    Join Date
    Jul 2009
    Location
    Houston
    Posts
    2

    blue
    2001 GMC Sierra

    ls1 t0 T400

    use a hughes performance hp3795, along with a hphp4004 flexplate

  11. #11
    Junior Member
    Join Date
    Jul 2009
    Location
    Houston
    Posts
    2

    blue
    2001 GMC Sierra

    ls1 to 400

    also gm part # 12563532,12551367,12563533

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. turbo ls 240sx vs turbo mustang + video
    By Sleeper101 in forum Kill Stories
    Replies: 30
    Last Post: 07-26-2011, 10:44 AM
  2. Wanted: Trade my HUGE turbo for your smaller turbo
    By Iknowthefuture in forum Parts Wanted / Trade
    Replies: 0
    Last Post: 08-30-2010, 06:47 PM
  3. Replies: 0
    Last Post: 09-29-2007, 07:50 AM
  4. Pontiac Firebird Turbo Installation - Subterranean Turbo System
    By Ed Blown Vert in forum Firebird / WS6
    Replies: 1
    Last Post: 09-12-2007, 07:16 PM
  5. camaro turbo vs 3000gt turbo
    By GONZO SS in forum Multimedia Section
    Replies: 6
    Last Post: 01-01-2007, 07:58 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
  •