Last July 4, we has a Z06 at Waterford Hills (Michigan)which has a 75 db limit at the fence line--about 30 feet. It did not break the threshold level so you should be safe.
Helps to have GM in you back yard-they let 4 of us take a two lap spin in it. Two seconds quicker than a 2000 C5
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01 Z06 Black
64 FI RED Convt.