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why is there aflat spot

This is a discussion on why is there aflat spot within the Automatic Transmission forums, part of the Drivetrain category; I took the car on the highway yesterday at it seems like the car hits a flat spot after 70 ...

  1. #1
    now greybat66
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    navy blue metalic
    1998 trans am conv

    Question why is there aflat spot

    I took the car on the highway yesterday at it seems like the car hits a flat spot after 70 u have to get on it to accelerate.I have a 1998 ls1 automatic with 273 gears and no traction control.I was wondering if anybody knew why this is happening, thank you.

  2. #2
    Senior Member
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    How far above 70? Maybe it's just the gears - mine originally came with 2.73's and had to punch it too above 70, but it would downshift and go. Been so long ago can't remember exactly. At 70 you're only at about 1750 RPM.

  3. #3
    now greybat66
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    navy blue metalic
    1998 trans am conv

    why is there aflat spot

    Thank you for repling actually your are right it down shifts after 70 and then it goes.

  4. #4
    Just me Y2KPewterSS's Avatar
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    Pewter metallic
    2000 Camaro SS

    The automatics have that dead spot. Put a stall convertor in there, and you won't have that dead spot anymore
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