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Old 10-17-2012, 12:16 PM   #8
flyingtim01
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Join Date: Apr 2011
Location: Clinton, CT
Posts: 101
Re: '71 K20 Growling/Grinding noise

I took the driveshaft out last night, and when I was under there, noticed that the tops of the mufflers are contacting the bottom of the bed supports. It's a Heartthrob kit that's about a year old, and everything is tight, but I wonder if I'm getting a slight exhaust vibration transmitting through the frame. Something else to check!
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