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Thread: need help with swap 4.3-5.3

  1. #81
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    a heat gun/paint peeler and a pair of gloves will be your friend.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  2. #82
    Join Date
    Dec 2007
    Location
    houston
    Posts
    45
    i have done it and it wasnt a deal breaker for me. im 6'6" so that probally helped reaching all the way through the engine bay . on a serious note, its no biggie at all, just start at the batter side of the harness, flop the passenger side connectors over the motor, then strap it down to the intake and start pluggin away. i cant remember if i zip tied the harness to the fuel rail or tried to push the loom retainer in its factory spot.. eitherway it works. just make sure the harness is away from headers ...
    clint
    1987 5.3 4l60e Silverado - daily driver with A/C,P/W,P/L,TILT and HID projectors - also for sale @ $8,500
    A poor man buy's it twice

  3. #83
    Join Date
    Dec 2007
    Location
    wichita falls, tx
    Posts
    3,067
    soo...after fightin pneumonia all week i finally got the chance to swap the harnesses out yesterday, was no prob at all...now its thowing o2 codes but the transmission is back to working, if i ever get this truck running right it will be a miracle!!
    ↓↓↓click pic to go to garage↓↓↓

    408, WCCHL92s, nelson tune,4L80e 3600 Circle D,
    Intro Radicalli's

  4. #84
    Join Date
    Dec 2007
    Location
    wichita falls, tx
    Posts
    3,067
    ok found a loose ground wire and the cel went out...woohoo!!!


    also went to the carwash and took some pics..









    ↓↓↓click pic to go to garage↓↓↓

    408, WCCHL92s, nelson tune,4L80e 3600 Circle D,
    Intro Radicalli's

  5. #85
    Join Date
    Mar 2003
    Location
    San Marcos Texas
    Posts
    4,393
    Nice!
    2006 Superior Blue Trailblazer SS AWD, Stock as a rock

    Sold: 2002 GMC Sportside Denali front end with a 2002 LS1, FLT level 5, Yank 2600, Trick Turbo, T76, Nelson intercooler, 60LB injectors, Warbro fuel pump, Eaton locker, Magnaflow, 3.42, Nelson Performance Tuning (speed density).

    Sold: 1981 GMC LB RC 1500 2002 4.8L 4L60E 12 bolt 3.73 Richmond Lock Right AC PS Nelson Performance tuning

  6. #86
    Join Date
    Sep 2005
    Location
    Austin Tx.
    Posts
    13,138
    looks good. How does it drive?
    1951 3100
    1984 C10

  7. #87
    Join Date
    Dec 2007
    Location
    wichita falls, tx
    Posts
    3,067
    drives good, but since i swapped the harness it idles real low and smells like its running rich, i think one of the o2 sensors is goin out or somethin, it did it all day today with no cel, and finally when i was driving home the cel came on so now i can see what the prob is i hope....another trip to auto zone!!
    ↓↓↓click pic to go to garage↓↓↓

    408, WCCHL92s, nelson tune,4L80e 3600 Circle D,
    Intro Radicalli's

  8. #88
    Join Date
    Dec 2007
    Location
    wichita falls, tx
    Posts
    3,067
    ok...same codes coolant temp sensor, and o2 sensors.....and now when the truck is warm it doesnt wanna start?....i had nelson turn off the back o2 sensors they dont need to be plugged in for grounding purposes do they?
    ↓↓↓click pic to go to garage↓↓↓

    408, WCCHL92s, nelson tune,4L80e 3600 Circle D,
    Intro Radicalli's

  9. #89
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    Nope, no need for the sensors or wires at all once the codes are turned off.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  10. #90
    Join Date
    Dec 2007
    Location
    wichita falls, tx
    Posts
    3,067
    well....i dont know whats wrong then
    ↓↓↓click pic to go to garage↓↓↓

    408, WCCHL92s, nelson tune,4L80e 3600 Circle D,
    Intro Radicalli's

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