Vibration at 80 mph

[fantaz]

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

[5.0THIS]

Could be the driveshaft. If it was a clutch/flywheel issue, it would most likely be related to engine speed, not vehicle speed

[fantaz]

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

[jasonisdn]

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

[5.0THIS]

driveshaft being off balance is somewhat common on these cars.

[fantaz]

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?

[5.0THIS]

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.

[Chad97z]

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"

[psychoticLS1]

It's so common that Chevy came out with this

[Chad97z]

do you have one that includes 1997? =)

[Like2gofst]

Mine did the same thing. It was the drive shaft.

[Z06-Goose]

Driveshaft +1