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Thread: '04 6.0 LQ4 IS IN

  1. #1
    Join Date
    Sep 2004
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    665
    I got my 6.0 installed a couple of weeks ago. To my wifes suprise nothing has gone wrong yet, besides the crank pulley for the whipple comming loose during a tuning session. Allen was trying to prep me for buying a new tranny the way it sounded.

    The performance difference is most noticable down low, and it made a HUGE difference.

    For anybody thinking about this conversion - DO IT!!! There were zero problems with the swap. The only small snags, and I mean really small, came when hooking up the fule lines and a vacuum fitting on the new intake manifold.

    Engine Swap Diary

    I did loose 1.5 psi of boost in the swap. I guess the bigger motor just breathes a little better. I'll be searching for some smaller whipple pulleys to play with really soon and then getting some track times.
    No more trucks, but this is what I used to have. 2000 GMC Sierra, 6.0L-LQ4, Built 4L60, LS6 Cam, The Other Guys Headers, 3 inch exhaust and 7 chamber flowmaster, 43lb injectors, Nelson Tuning, Drop - 3/4 McGaughys Spindles, Bell Tech Shackles & Hangers. Best time 13.59 @ 106

  2. #2
    Join Date
    Nov 2003
    Location
    Denton Texas
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    Bigger engine needs bigger air. It makes sense that you lost boost.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  3. #3
    Join Date
    Apr 2003
    Location
    Mansfield, Texas, USA
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    2,462
    If you're still running about on a 60E... I'd start looking into something else.
    The superior man is modest in his speech, but exceeds in his actions. - Confucius

    "He who asks of life nothing but the improvement of his own nature, is less liable than anyone else to miss and waste life."- Henri Frederic Amiel

    '01 Chev Z71 LT - '85 BMW 745i TURBO - '88 BMW 750iL - '88 Ford F150 XLT Lariat - '79 MB 240D - '79 MB 280S Euro
    '80 MB 380SE-5.0 Euro - '85 MB 300SD - '87 MB 300SDL - 1990 MB 300SEL - '91 MB 300SE - '91 MB 560SEL

    Let's face it, the red hair... makes 'em wet.


  4. #4
    Join Date
    Sep 2004
    Posts
    665
    Originally posted by Hit Man X@May 6 2005, 02:30 PM
    If you're still running about on a 60E... I'd start looking into something else.
    I've been keeping my eye out, but I don't drive that hard typically, and mine is still working with 80K on it. I hope it will make it another 25k or so.
    No more trucks, but this is what I used to have. 2000 GMC Sierra, 6.0L-LQ4, Built 4L60, LS6 Cam, The Other Guys Headers, 3 inch exhaust and 7 chamber flowmaster, 43lb injectors, Nelson Tuning, Drop - 3/4 McGaughys Spindles, Bell Tech Shackles & Hangers. Best time 13.59 @ 106

  5. #5
    Join Date
    Jun 2004
    Location
    george west texas
    Posts
    3,694
    great!!! enjoy the new power its a blast thats for shure
    '13 silverado LT...stock

    '11 lt 4x4 z71..tvs1900

    '01 gmc twins 6.0 jakes 400 ladder bars w/ coilovers tuned by nelson performance

  6. #6
    Join Date
    Apr 2003
    Location
    Mansfield, Texas, USA
    Posts
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    Originally posted by rosscob@May 6 2005, 03:32 PM
    I've been keeping my eye out, but I don't drive that hard typically, and mine is still working with 80K on it. I hope it will make it another 25k or so.
    That's good, I don't drive like a nut either.
    The superior man is modest in his speech, but exceeds in his actions. - Confucius

    "He who asks of life nothing but the improvement of his own nature, is less liable than anyone else to miss and waste life."- Henri Frederic Amiel

    '01 Chev Z71 LT - '85 BMW 745i TURBO - '88 BMW 750iL - '88 Ford F150 XLT Lariat - '79 MB 240D - '79 MB 280S Euro
    '80 MB 380SE-5.0 Euro - '85 MB 300SD - '87 MB 300SDL - 1990 MB 300SEL - '91 MB 300SE - '91 MB 560SEL

    Let's face it, the red hair... makes 'em wet.


  7. #7
    Join Date
    Mar 2005
    Posts
    1
    Originally posted by rosscob+May 6 2005, 02:32 PM--><div class='quotetop'>QUOTE(rosscob &#064; May 6 2005, 02:32 PM)</div>
    <!--QuoteBegin-Hit Man X
    @May 6 2005, 02:30 PM
    If you&#39;re still running about on a 60E... I&#39;d start looking into something else.
    I&#39;ve been keeping my eye out, but I don&#39;t drive that hard typically, and mine is still working with 80K on it. I hope it will make it another 25k or so. [/b]
    Adding the new power you better start looking now.

  8. #8
    Join Date
    Sep 2004
    Posts
    665
    Does Allen still have that transmission for sale? (grin)
    No more trucks, but this is what I used to have. 2000 GMC Sierra, 6.0L-LQ4, Built 4L60, LS6 Cam, The Other Guys Headers, 3 inch exhaust and 7 chamber flowmaster, 43lb injectors, Nelson Tuning, Drop - 3/4 McGaughys Spindles, Bell Tech Shackles & Hangers. Best time 13.59 @ 106

  9. #9
    Join Date
    Apr 2003
    Location
    Mansfield, Texas, USA
    Posts
    2,462
    Originally posted by rosscob@May 7 2005, 07:15 PM
    Does Allen still have that transmission for sale? (grin)
    Go for a 200-4R or an 80E, I wouldn&#39;t even waste money on a 60E at your type of torque levels. IMO
    The superior man is modest in his speech, but exceeds in his actions. - Confucius

    "He who asks of life nothing but the improvement of his own nature, is less liable than anyone else to miss and waste life."- Henri Frederic Amiel

    '01 Chev Z71 LT - '85 BMW 745i TURBO - '88 BMW 750iL - '88 Ford F150 XLT Lariat - '79 MB 240D - '79 MB 280S Euro
    '80 MB 380SE-5.0 Euro - '85 MB 300SD - '87 MB 300SDL - 1990 MB 300SEL - '91 MB 300SE - '91 MB 560SEL

    Let's face it, the red hair... makes 'em wet.


  10. #10
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    If the 200r4 will do the job I sure wouldn&#39;t waste the HP by going to an 80E unless you pull a heavy trailer. I just wonder how it will handle the load of a heavy truck. The Grand National is quite a bit lighter so not too much torque load on the transmission. Do you know of anyone that has done a 200r4 in a truck and how has it done so far?
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

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