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C5 mystery muffler-stock ?.

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Old Jul 5, 2015 | 01:45 PM
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Default C5 mystery muffler-stock ?.

at a recent corvette rally, other corvette owners commented on the great sound from my 2004 C5 convert. Next question, is the exhaust system stock? My immediate answer was Yes but I started to wonder. Car was bought with 11,000 miles , one owner and no mods done. However I checked the p/n on both mufflers - 10320468 with other markings 28903 CNA-TN. THE NUMBERS COME UP "does not cross reference" on all GM parts sites. I also have a parts manual for a 2004 C5 and the p/n also doesn't cross reference.
Does anyone know what muffler is on the car....it does pass the magnet test....is it stock ?
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Old Jul 5, 2015 | 02:25 PM
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I highly doubt anyone would compliment the sound of a stock c5. Can barely hear it lol.
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Old Jul 5, 2015 | 02:26 PM
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upload a picture of the muffler.
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Old Jul 5, 2015 | 02:30 PM
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Actually after a quick search, it does appear to be stock.
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Old Jul 7, 2015 | 10:26 AM
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All the stock C5 exhausts that I have "heard" are really quite so I'm sure if you are getting compliments, then you have something after market.
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Old Jul 8, 2015 | 06:49 PM
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Does it have stock manifolds or headers ? Cats or no ? Everything effects the sound.
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Old Jul 8, 2015 | 07:55 PM
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Originally Posted by Boredom
I highly doubt anyone would compliment the sound of a stock c5. Can barely hear it lol.


Stock C5 exhaust is softer than a freaking Camry.
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Old Jul 10, 2015 | 07:57 PM
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Bypass mod?
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Old Jul 11, 2015 | 12:39 PM
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Old Jul 11, 2015 | 01:24 PM
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Originally Posted by Boredom
I highly doubt anyone would compliment the sound of a stock c5. Can barely hear it lol.
Originally Posted by wcsinx


Stock C5 exhaust is softer than a freaking Camry.
I think a prius would give it a run for the money in the exhaust noise department.
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Old Jul 11, 2015 | 02:03 PM
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Originally Posted by Chicago1
I think a prius would give it a run for the money in the exhaust noise department.
Ouch! I generally fart louder than a stock C5.
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