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Thread: 2003 4.3v6 6.0 swap

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  1. #1
    Join Date
    Dec 2007
    Location
    wichita falls, tx
    Posts
    3,067
    yeah get the mounts from a 5.3, 4.8 and get the frame mounts and the motor mounts.

    some of the acc will swap over from the v6...asssuming you already have the bracket on the 6.0....

    read here
    ↓↓↓click pic to go to garage↓↓↓

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

  2. #2
    Join Date
    Jun 2008
    Location
    at my house
    Posts
    65
    I know the flywheel from the 6.0l will not work with my 4l60e but will the flywheel from the 4.3l bolt to the 6.0l?

  3. #3
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    What year 6.0l? Early models will work with the 4.3L flywheel. Late model won't. Measure how much crankshaft sticks out of the rear cover. If you bolt it to the crank and it wont turn because its against the back of the block, its a newer engine and won't work obviously.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  4. #4
    Join Date
    Jun 2008
    Location
    at my house
    Posts
    65
    Guys,

    I have my harness and TB swap completed but have a question about the DBC harness. The mechanical TB has two electrical connections but it seems my harness has three? The third connection is an in line 4 plug connector that has one red wire pinned?

  5. #5
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    mass air flow wire connector?
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

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