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Thread: do i need to swap ecm and harness on 4.8 to 6.0

  1. #1
    Join Date
    Feb 2010
    Posts
    1

    do i need to swap ecm and harness on 4.8 to 6.0

    do i need to swap the ecm and harness to go from a 2001 4.8 to lq9? can the computer be reflashed? thanks for any help!

  2. #2
    Join Date
    Dec 2006
    Posts
    2,808
    nope all should be fine, it'll deffinately need to be tuned though for the new found power
    Heavily Modded NA 6.0 STOCK short block BUT Still Street Friendly @ 480+/440+ and now closer to 500
    BEST:
    ET: 11.39
    60FT:1.52
    1/4 MPH: 118

  3. #3
    Join Date
    Mar 2009
    Location
    Palestine, TX
    Posts
    713
    i have the same question, i'm swapping up to a 370 from my 4.8L and i'm wondering if i can switch the ecms to get my truck running so i can drive it until it gets tuned
    02' Silverado RCSB, CAI, LTs+ORY, 65E Servos, 1.75:1 SS-LW shaft rockers, Custom E-fans, Black Headlights and Bumper Lights

    Up Next: 2/4 drop, 18'' titan 5spokes, forged 370ci, Beefed up 60E with HD2kit

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