+ Reply to Thread
Page 1 of 2 1 2 LastLast
Results 1 to 10 of 13

Thread: 5.3 to 6.0 swap...now stuck on tranny decision

  1. #1
    Join Date
    Nov 2011
    Location
    NH
    Posts
    109

    5.3 to 6.0 swap...now stuck on tranny decision

    so i swapped a 6.0 into my 1999 gmc 1500 that had the 5.3 . its got the 4l60e in it now but its new hp pretty much blew 2nd gear out. so would it be a better idea to buy a built 4l60e? or get a 4l80e to swap into it?? and with the 4l80e swap can i run the transfer case thats on the 4l60? or what one do i need? and will i need anything else to do the swap??? the motor im running is about 450 hp. just wondering how to fix this the cheapest way i can but still be reliable.

  2. #2
    Join Date
    Jan 2008
    Posts
    8,203
    id do a 4l80e bro..i broke 2 60e's and on both the 2nd gear was gone lol .not sure if u can use same transfer case

  3. #3
    Join Date
    Sep 2008
    Location
    Arizona/Utah
    Posts
    3,955
    Go with an 80e but swap to awd that'd be way better! Check out the stickie about swapping to awd he used an 80e. Sick setup for sure.
    ECSB 2kSierra 2wd 4.8L-K&N-HPtuners-Calspeed LT's-Magnaflow-Tahoe20's-HankookRH06

    waiting to go in... 3.90s, 214/220cam

  4. #4
    Join Date
    Nov 2011
    Location
    Russellville, Alabama
    Posts
    39
    I'm thinking a built 4l80, my uncle has one in his 99 shortbed, and it is flawless with some tuning.

  5. #5
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,689
    80e all the way.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  6. #6
    Join Date
    Dec 2007
    Location
    Ponca City
    Posts
    1,617
    Even a stock 80
    Slowest in Oklahoma...

  7. #7
    Join Date
    Nov 2011
    Location
    NH
    Posts
    109
    yeah im going to go with a 80. does anyone know if i need a transfercase or will the one off the 4l60e work??

  8. #8
    Join Date
    Feb 2012
    Location
    clio, mi
    Posts
    17
    Quote Originally Posted by kbomhower View Post
    yeah im going to go with a 80. does anyone know if i need a transfercase or will the one off the 4l60e work??
    Im in a pretty similar swap and the flywheels on 6.0 and 5.3 are different? How did you get past this with the 4l60e? Anything helps, thanks
    Matt

  9. #9
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,689
    If you have a 99-2000 6L you're going to have difficulties putting a 60e behind it due to the long crank snout.

  10. #10
    Join Date
    Nov 2011
    Location
    NH
    Posts
    109
    i just got sick of trying to find custom parts and got a 4l80e. wasnt a whole lot of work and from what everyone says its well worth it in the end. im almost done with everything now and it only took a week of working on it here and there to get it done.

+ Reply to Thread

Tags for this Thread

Posting Permissions

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