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Thread: 7.4 file built , need it verified

  1. #1
    Tuner in Training
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    7.4 file built , need it verified

    just looking for validation to see if it will run before i try it , thanks for any help
    jim
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  2. #2
    Advanced Tuner Obsolete489's Avatar
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    A 7.4 vortec? On my phone so I can't look at the file yet.
    2000 K2500 - 489 CI Vortec w/ comp XE270 cam - 0411 swap and rear mount turbo
    1972 M35a2
    2011 LML Duramax

  3. #3
    What mods? Stock? Cammed? What?

    Edit: Looked at it. I think you're going to get a lot of KR due to all of the timing you've put in it. Your PE is also set to come on at 1200rpm at 90% throttle. You'll probably get more use setting your vacuum and TPS positions to lower numbers.

    Also, your cylinder volume. I've calculated mine to be 0.93005 L, where'd you get yours from?
    Last edited by Mangonesailor; 11-07-2018 at 07:54 PM.
    1997 Chevrolet K2500 ECSB, 0411, 454, headers w/ Exhaust, MSD, 28lb injectors "Biggin"

  4. #4
    Advanced Tuner Obsolete489's Avatar
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    It looks like it should run. The main thing I had different was the alt L term and F term in the system options, I have mine at 1, but otherwise i think you're okay. Those might not prevent it from starting either.
    2000 K2500 - 489 CI Vortec w/ comp XE270 cam - 0411 swap and rear mount turbo
    1972 M35a2
    2011 LML Duramax

  5. #5
    Tuner in Training
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    this is bone stock , i was looking for someone to flash it on their truck if possible
    thanks for the replies
    Jim
    Last edited by benchtop; 11-10-2018 at 01:44 PM.

  6. #6
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    OSOLETE489 , Mangonesailor thanks guys


    the cyl volume was stock from a blackbox tune ,as far as the pe over the last few years I have used this combo and it work well for out of the box power and oddly better fuel mpg as reported by customers also did anyone see the calibration notes , the timing files are from an 8.1 , actually all of the changes are in the notes
    thanks
    Jim
    Last edited by benchtop; 11-10-2018 at 01:53 PM.

  7. #7
    I'd be wary of the 8.1 timing tables into a stock motor. But it looks like it'll run. Everything just about lines up with my tune, except for subtle things (Like my startup VE is different due to my own tuning, DFCO, etc...)
    1997 Chevrolet K2500 ECSB, 0411, 454, headers w/ Exhaust, MSD, 28lb injectors "Biggin"

  8. #8
    Advanced Tuner Obsolete489's Avatar
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    I agree with mangone here, stock cam probably won't take that much timing, especially on 87 octane if that's what you run, might stand a chance on 91.
    2000 K2500 - 489 CI Vortec w/ comp XE270 cam - 0411 swap and rear mount turbo
    1972 M35a2
    2011 LML Duramax