| [GMCnet] Re: Quiet Exhaust Question? [message #368559 is a reply to message #368542] |
Tue, 25 January 2022 08:58   |
Keith V
Messages: 2337
Registered: March 2008
Location: Mounds View,MN
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I fixed the rap by running the exhaust straight out the back rather than pointed out the pass side. I barely hear it at all now 🙂
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From: Terry via Gmclist
Sent: Sunday, January 23, 2022 4:51 PM
To: gmclist@list.gmcnet.org
Cc: Terry
Subject: [GMCnet] Re: Quiet Exhaust Question?
Mine is quiet with 2 mufflers up front and a long pipe to the right rear corner. Pipe is 2.5 inch diameter. If I ever woke anybody up in a campground
they must have been sleeping in the road. Maybe the insides of one or both of your mufflers has corroded away and is not cancelling the sound wave.
Headers up front are definitely louder than cast iron manifolds and I also have those courtesy of the P.O.. I also have the fender liners installed.
Sitting in the driver's seat I can barely hear the engine running. Engine tuning can make a big difference in the amount of sound emitted from
headers, but usually will be accompanied by loss of normal power output and poor fuel economy. If it runs well and smooth I would check/replace the
mufflers first,especially since I have the equipment to tackle that job. A resonator is just another muffler and will quiet it more (and eliminate
exhaust "crack") but also may cost just as much to procure and get installed as replacing the mufflers. Depends on where and how you shop.
--
Terry Kelpien
ASE Master Technician
73 Glacier 260
Smithfield, Va.
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Keith Vasilakes
Mounds View. MN
75 ex Royale GMC
ask me about MicroLevel
Cell, 763-732-3419
My427v8@hotmail.com
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