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Thread: truck falls on its ass at 87-95

  1. #1
    Join Date
    Aug 2008
    Location
    mansfield texas
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    3,512

    Angry truck falls on its ass at 87-95

    Ok cruising 60 i nail it... Great freakin pick up bug at 87-95 it begins to fall on its ass... Is this a shitty tune?

    My truck is 03 5.3, kn cai, LT into ORY into Flomaster muffler, it is cammed 220/224 112 lsa with 3000 stall...

    Any advise on what it is.. Or is it a case of just a shitty tune

  2. #2
    what rpm are you @ when it falls on its ass?

  3. #3
    Join Date
    Aug 2007
    Location
    Honeywood, Ontario
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    6,994
    I'd say it's running out of fuel or its a bug in the tune.
    2006 Silverado
    Little Black Bitch

  4. #4
    Join Date
    Aug 2008
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    mansfield texas
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    Id have to do it again to check rpm...

    Far as bad tune i know that... But what could it be... I wanna go back to the company and get a refund...after all the trouble i went thru i regret even Cammin my truck...

  5. #5
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    you could be floating valves. Did you replace the spring when you swapped the cam?

    BTW, what gear are you in at these speeds, 2nd I would assume.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  6. #6
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    Aug 2008
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    I was told they did behave springs... But honestly think they screwed me over

  7. #7
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    Aug 2008
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    Behive***

    man honestly think its a shitty tune... If i am shifting
    it won't fall on its ass... But n drive wfo it has power all the way to 90s

  8. #8
    Join Date
    Aug 2008
    Location
    mansfield texas
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    Behive***

    man honestly think its a shitty tune... If i am shifting
    it won't fall on its ass... But n drive wfo it has power all the way to 90s

  9. #9
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    pull a valvecover and see what color paint is on the springs. All Gen3/Gen4 engines come from the factory with beehive springs.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  10. #10
    Join Date
    Aug 2008
    Location
    mansfield texas
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    3,512
    They said the put in new springs tho other that factory...

    I know i got screw over now don't know what i need to do to get atleast a refund on some parts and labor...

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