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Vibration at 80 mph

This is a discussion on Vibration at 80 mph within the LT1 forums, part of the Vehicle Specific category; My car has a vibration that starts right at 80 mph. It doesn't matter if I am in 5th or ...

  1. #1
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    94 z28

    Exclamation Vibration at 80 mph

    My car has a vibration that starts right at 80 mph. It doesn't matter if I am in 5th or 6th and it feels like driving over the grooves on the side of the highway but softer. I can mostly feel it on the clutch pedal but my clutch is great with no slippage. Trans never gives a problem or a grind either I can feel it more when I let off the gas. I was thinking maybe flywheel but I am an idiot when it comes to trans/clutch issues. Thanks in advance for opinions

  2. #2
    Senior Member 5.0THIS's Avatar
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    Could be the driveshaft. If it was a clutch/flywheel issue, it would most likely be related to engine speed, not vehicle speed

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    are the driveshafts in these cars balanced at all? is this common on these cars? i'm fairly new to the camaro scene. thanks

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    Member jasonisdn's Avatar
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    Quote Originally Posted by fantaz View Post
    are the driveshafts in these cars balanced at all? is this common on these cars? i'm fairly new to the camaro scene. thanks
    might have thrown a weight off. take the driveshaft to a machine shop and have them balance it. it might not be the issue though but it is the best place to start

  5. #5
    Senior Member 5.0THIS's Avatar
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    driveshaft being off balance is somewhat common on these cars.

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    thanks for the replies I'll get that checked. had a similar problem with my old mustang but the whole car shook with that. I read people using ws6 driveshafts and such. what do you guys suggest as a replacement if I go that route?

  7. #7
    Senior Member 5.0THIS's Avatar
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    For stock or near stock power levels, a stock aluminum driveshaft out of an LS1 car works well. Bolts right in and they're fairly cheap.

  8. #8
    Member Chad97z's Avatar
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    There is a campaign on the drive shaft if it vibrates around that speed. But its a fast vibration. Not like a tire vibration which is more "vigorous"

  9. #9
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    It's so common that Chevy came out with this


  10. #10
    Member Chad97z's Avatar
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    do you have one that includes 1997? =)

  11. #11
    Like2gofst
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    Mine did the same thing. It was the drive shaft.

  12. #12
    Senior Member Z06-Goose's Avatar
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    Avus Silver
    2007 Audi RS4

    Driveshaft +1

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