Results 1 to 5 of 5

4L60E Build Up for Serious Power

This is a discussion on 4L60E Build Up for Serious Power within the Automatic Transmission forums, part of the Drivetrain category; So, I am working on a major overhaul of a motor/tranny(LT1/A4) out of a 94 Z28. I am looking at ...

  1. #1
    Knight of Chaos xzaero0's Avatar
    Join Date
    May 2007
    Location
    Nebraska
    Age
    37
    Posts
    468

    Black
    2000 Trans Am

    4L60E Build Up for Serious Power

    So, I am working on a major overhaul of a motor/tranny(LT1/A4) out of a 94 Z28. I am looking at Serious Power with a 383 and T76 Turbo and was wondering if there is any way to build up the tranny to take that kind of power, Im shooting for around 700 hp, can it handle it even with a rebuilt tranny with new clutches and valves and torque converter etc?

  2. #2
    Senior Member slims00ls1z28's Avatar
    Join Date
    Apr 2007
    Location
    TN
    Posts
    1,212

    2005 GTO M6 Black
    2000 Z28 A4 Red

    Clutches and stuff won't cut it at that hp level. You'll need to upgrade input shafts to not only hardened and rienforced but the thicker ones, at least 5 pinion, planetaries and other 4L65E hardware but honestly after spending that much you'd probably come out better with a 4L80E swap. It stock can handle more than many built up 4L60E's.

  3. #3
    Knight of Chaos xzaero0's Avatar
    Join Date
    May 2007
    Location
    Nebraska
    Age
    37
    Posts
    468

    Black
    2000 Trans Am

    Quote Originally Posted by slims00ls1z28 View Post
    Clutches and stuff won't cut it at that hp level. You'll need to upgrade input shafts to not only hardened and rienforced but the thicker ones, at least 5 pinion, planetaries and other 4L65E hardware but honestly after spending that much you'd probably come out better with a 4L80E swap. It stock can handle more than many built up 4L60E's.
    Im not familiar with a 4l80E. Is it just an upgraded 4l60/4l65e or it it a completely different transmission.

  4. #4
    Senior Member slims00ls1z28's Avatar
    Join Date
    Apr 2007
    Location
    TN
    Posts
    1,212

    2005 GTO M6 Black
    2000 Z28 A4 Red

    Completely different. Much bigger everything. Huge teeth on all the gears bigger shafts stronger everything. I've not seen what an install looks like in them as I have yet to do it and don't know how tight it is yet. However the GM High perf issue that had the power add shootout all the auto cars had the 4L80's so I know it has/can be done may times. Just as iof this moment I'm not sure personally what's involved. Especially in the trans tunnel. But back to the GM high tech none of those looked like anything serious was done to them.

  5. #5
    Member performabuilt's Avatar
    Join Date
    Jul 2006
    Location
    SUGAR LOAF PA
    Posts
    489

    blue
    2000ss

    You would need a max level 4l60e or better a 4l80e but the 4l80e is a rather exspensive swap.
    Quote Originally Posted by xzaero0 View Post
    So, I am working on a major overhaul of a motor/tranny(LT1/A4) out of a 94 Z28. I am looking at Serious Power with a 383 and T76 Turbo and was wondering if there is any way to build up the tranny to take that kind of power, Im shooting for around 700 hp, can it handle it even with a rebuilt tranny with new clutches and valves and torque converter etc?

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. 421 H.O. Tri-Power Engine Build - Part 2
    By Ed Blown Vert in forum Firebird / WS6
    Replies: 1
    Last Post: 12-19-2013, 07:51 PM
  2. 421 H.O. Tri-Power Engine Build - Part 1
    By Ed Blown Vert in forum Firebird / WS6
    Replies: 0
    Last Post: 12-19-2013, 05:50 PM
  3. Corvette Engine Build - The Power Principal
    By Ed Blown Vert in forum Corvette
    Replies: 0
    Last Post: 12-09-2009, 11:10 AM
  4. re build 4L60E what do you suggest?
    By vxchev8 in forum Automatic Transmission
    Replies: 30
    Last Post: 09-23-2007, 11:25 AM
  5. 5.7L Third-Gen Engine Build - Balance Of Power :Decision '07
    By Ed Blown Vert in forum Firebird / WS6
    Replies: 0
    Last Post: 09-07-2007, 06:20 AM

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
  •