Quietest C3 mufflers
Thread Starter
Racer
Joined: Jun 2005
Posts: 400
Likes: 11
From: Lubbock Texas
Quietest C3 mufflers
I am returning to the forum after being absent for many years. I just purchased a 77 with 15k documented miles. It is bone stock with the exception of a pair of flowmaster mufflers. In keeping with the stock theme, I would like to go with an original factory sounding sounding muffler. Suggestions? Thanks in advance.
Pro
Joined: Nov 2019
Posts: 648
Likes: 353
From: Portland, Oregon
With single exhaust going thru a catalytic converter you won’t get a noticeable difference in sound from the driver’s seat. My 78 had 17,000 miles and OEM mufflers on it, but had the cat deleted and dual pipes without a crossover. Needed cat to pass emission testing so I put an original style exhaust from Corvette Central going thru one cat and Magnaflow mufflers. It got quieter; very mellow sound at idle; step on it and the carb secondaries opening up are louder than the exhaust. Magnaflow makes a high flowing replacement cat that fits exactly in place of the original. The CC exhaust is made by them to duplicate the original exactly, except for the shape of the cat. They have OEM duplicate mufflers available as well if you want it even quieter.
Last edited by Kerschmolar; Jun 19, 2022 at 01:22 PM.
Le Mans Master
Joined: Jan 2007
Posts: 7,957
Likes: 3,318
From: Omaha NE
2025 c3 ('74-'82) of the Year Finalist - Unmodified
2023 C3 of the Year Finalist - Unmodified
2022 C3 of the Year Finalist - Unmodified
2020 C3 of the Year Finalist - Unmodified
I would check out CC like Kerschmolar said.
They sell both the original round style '73-'78 muffler and the hideaway.
Both sound bone stock...
They sell both the original round style '73-'78 muffler and the hideaway.
Both sound bone stock...
