Square body d-max swap

Discussion in 'diesel engines & drive trains' started by stepside, Feb 20, 2019.

  1. stepside

    stepside Well-Known Member

    Hi gearheads
    I boght duramax engine,wiring harness and ecu it's lly or lbz from 2006 van
    I swap i to my square body
    Engine mounts are easy but wiring is challence because there is no much information for stand alone wiring ,ecu needs new tune
    Allso i sand plast and paint frame ped and cap
    I have one rotten cap in back yard so i may cut 50 cm of it and do extended cap to my square
    Lotsof ideas but no time, i drive 1000 kilometer every week so i have to do engine swap fast

    Any info is wellcome ,i take pictures and update here
     
  2. Maniacmechanic1

    Maniacmechanic1 solid fixture here in the forum

  3. Maniacmechanic1

    Maniacmechanic1 solid fixture here in the forum

    They typical used the Allison 5 speed auto trans.
    Not sure if the preset 4L80E compatible.

    Diesels have special stall torque converters.
    May kill the stock 4L80e converter fast.

    They use an Allison 504 Torque converter to TH400 on Street Outlaws.
    Big Chiefs Pontiac GTO. CROW.
    4000 Hp +
     
  4. Maniacmechanic1

    Maniacmechanic1 solid fixture here in the forum

    A diesel forum be help.
     
  5. Maniacmechanic1

    Maniacmechanic1 solid fixture here in the forum

    At work right now Stepside.
    They made a Diesel version of 4L80e trans.
    Has 6-bolt torque converter to flexplate.
     
  6. Maniacmechanic1

    Maniacmechanic1 solid fixture here in the forum

  7. Maniacmechanic1

    Maniacmechanic1 solid fixture here in the forum

    They have injector issues when they get old Duramax.
    Pretty good diesel engine.
    LIKE Cummins myself.
    I work on Cummins ISX daily. In most School Buses at my work.
     
  8. Maniacmechanic1

    Maniacmechanic1 solid fixture here in the forum

  9. Maniacmechanic1

    Maniacmechanic1 solid fixture here in the forum

  10. Maniacmechanic1

    Maniacmechanic1 solid fixture here in the forum

    Diesel are Fun.
    They have so much torque down low with Boost...explode anything.
    Turbo 400 will take.
    Allison trans.
    Eaton Rockwell Bluebird school bus rear end take it.
     
  11. stepside

    stepside Well-Known Member

    Van engine is detuned for 4l80e trans
    I use my full manual 4l80
    10 bolt rear end works as fuse in this build
    I like cummins allso but it's very expensive engine over here
    I got duramax prety cheap
    Also mechanical ip is one option but it's not easy job
     
  12. Maniacmechanic1

    Maniacmechanic1 solid fixture here in the forum

    Cummins is highly prized in the USA.
    Expensive here also.
     
  13. Maniacmechanic1

    Maniacmechanic1 solid fixture here in the forum

    10-bolt will die ! Dana 60-70 Ok
     
  14. Maniacmechanic1

    Maniacmechanic1 solid fixture here in the forum

  15. Maniacmechanic1

    Maniacmechanic1 solid fixture here in the forum

    Its going to be a pain the ECM wiring.
    GM uses a ton of serial data lines & all black box modules need to chat talk to each other.
     
  16. Maniacmechanic1

    Maniacmechanic1 solid fixture here in the forum

  17. stepside

    stepside Well-Known Member

    Here it is duramax lly,wiring is big mess
    IMG_20190223_122336.jpg IMG_20190223_122402.jpg
     
    Last edited: Feb 24, 2019
    Maniacmechanic1 likes this.
  18. Maniacmechanic1

    Maniacmechanic1 solid fixture here in the forum

    Identify as much as you can.
    Make notes on paper.
    Look around for you yet .
     
    stepside likes this.
  19. Maniacmechanic1

    Maniacmechanic1 solid fixture here in the forum

  20. stepside

    stepside Well-Known Member

    Some progress,i got engine runing,it starts and runs few seconds then vats shut it down
    I boght lisense from alldaydiy.com there is all wiring diagrams
    Duramax needs two relays ,six fuses ,b+ ,start run voltage and park neutral signal from the transmission and shifter then it starts
    Now i have to find tuner to disamble vats and other un needed functions from ecm
     

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