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Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons Bolt-Ons | Intakes | Exhaust

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Old 02-11-2011, 09:17 AM   #1
GrinderSS
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Drives: IOM 2SS/RS
Join Date: Jun 2010
Location: Florida
Posts: 539
LS3 Vibration

Guys, has anyone noticed that the LS3 seems to have a nasty vibration at about 3K RPM? I really didn't notice it until I tried some stiff motor mounts, but it was so bad I had to remove them.

I'm wondering if I need to get a new/better harmonic balancer or have my flywheel/clutch assembly checked. I have the ACT twin disk clutch, but I imagine that if it were out of balance the vibration would get worse as the RPM's increase.

Thoughts?
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