Vibration under acceleration

[Brendonaustin]

Hi. I recently bought an awesome Sw20 2k cup car. Recently it has a worsening vibration under acceleration at app140kph and above (on track) would this likely be CV? If I slip into neutral and coast at speed it stops. ??? Any help very much appreciated.

[GlanzaAtHeart]

Hi. I recently bought an awesome Sw20 2k cup car. Recently it has a worsening vibration under acceleration at app140kph and above (on track) would this likely be CV? If I slip into neutral and coast at speed it stops. ??? Any help very much appreciated.

While I have not much experience, is the vibration in one corner does it feel like? If it pulls to one side, it may be a worn suspension bushing or two?

[GDII]

The CVs will still be spinning at the same speed as the wheels but if the load has been taken off them, maybe it stops the vibration.
Wheel bearing maybe? Does it vibrate when you let off the power but leave it in gear?

If it was clutch or flywheel you'd notice it at the same RPM in all gears.
If it was a wheel it would stay vibrating at that speed.