Quiet mufflers for C3?
Thread Starter
Le Mans Master
Joined: Sep 2003
Posts: 7,776
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From: Everywhere
Quiet mufflers for C3?
What would be a good muffler for a 78, that is quiet yet flows well?
It doesn't have to be completely quiet, like at WOT, but just cruising I'd like for the car to be quiet. The stock mufflers make a lot of noise, and the drone gets tiring very quickly on trips.
Also, I don't want to restrict hp. I need mufflers that will allow a 400hp engine to breathe freely.
I know this is asking a lot of a muffler, but I think there are a few out there that would work: Borla, Edelbrock, DynoMax Ultras.
I assume these type mufflers will be larger; will the size of them be an issue?
I've had flowmasters in the past, and they were ok. But, it seems like everyone has them these days, so I would like someting different for a different sound.
BTW, I'm adding an X-pipe with the install, so that should help a little with the noise.
Thanks for your advice :cheers:
It doesn't have to be completely quiet, like at WOT, but just cruising I'd like for the car to be quiet. The stock mufflers make a lot of noise, and the drone gets tiring very quickly on trips.
Also, I don't want to restrict hp. I need mufflers that will allow a 400hp engine to breathe freely.
I know this is asking a lot of a muffler, but I think there are a few out there that would work: Borla, Edelbrock, DynoMax Ultras.
I assume these type mufflers will be larger; will the size of them be an issue?
I've had flowmasters in the past, and they were ok. But, it seems like everyone has them these days, so I would like someting different for a different sound.
BTW, I'm adding an X-pipe with the install, so that should help a little with the noise.
Thanks for your advice :cheers:
Intermediate
Joined: Aug 2003
Posts: 49
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Re: Quiet mufflers for C3? (Sling Blade)
Keep in mine, what ever muffler system you decide to go with there are no tail pipes so there will always be some sound coming out of them.
I run Flowmaster Delta Flow 50's, load at low end, reasonable on the hwy.
They are 4" thick x 9 3/4" wide x 19" long and fit perfect. I would not go with any muffler that is longer than 19" (case ) as there is not much more room under there. If I knew how to add pictures I would show you how mine fit in. :thumbs:
I run Flowmaster Delta Flow 50's, load at low end, reasonable on the hwy.
They are 4" thick x 9 3/4" wide x 19" long and fit perfect. I would not go with any muffler that is longer than 19" (case ) as there is not much more room under there. If I knew how to add pictures I would show you how mine fit in. :thumbs:
Team Owner
Joined: Dec 1999
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Re: Quiet mufflers for C3? (Ice_Fire)
I have used Borla on my car over the past year or so. The sound is sorta in the middle range. I think it is a good choice for an under the car muffler.
I am going to side pipes in the next couple of weeks. :)
I am going to side pipes in the next couple of weeks. :)
Melting Slicks
Joined: Apr 2001
Posts: 2,119
Likes: 213
From: Pittsburgh PA
Re: Quiet mufflers for C3? (Sling Blade)
You want a 400hp engine to be quiet? The only thing I know that comes close is a new Z06. Are you getting 400hp from a small block without headers? :cheers:
Thread Starter
Le Mans Master
Joined: Sep 2003
Posts: 7,776
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From: Everywhere
Re: Quiet mufflers for C3? (foundvettelifeisgood)
You want a 400hp engine to be quiet? The only thing I know that comes close is a new Z06. Are you getting 400hp from a small block without headers? :cheers:
I don't expect the car to be so quiet that you can hear a pin drop; I know it's going to make some noise. I just want less than it makes now. Currently I rattle the neighborhood when I leave out in the mornings :lol:
Perhaps part of my problem is that the baffles in the stock mufflers are about gone. Maybe any decent muffler would be quieter. What I need to do is go to the muffler shop and see if they have any V-8 cars there that I could listen to. Maybe that would help.
Melting Slicks
Joined: Apr 2000
Posts: 3,286
Likes: 8
From: San Jose California
Re: Quiet mufflers for C3? (Sling Blade)
I would have first suggested stock mufflers as the best combo. Your 78 would have had a catalytic converter. I believe such cars used less restrictive mufflers. Your muffler is probably either worn out, or perhaps noisier if you have removed the cat. If you have removed the cat, try using a factory muffler spec'd for a pre-cat car.
Chuck
Chuck
Team Owner
Joined: Feb 2003
Posts: 30,183
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From: Lake Norman NC
Re: Quiet mufflers for C3? (Sling Blade)
I have stock mufflers on the 74...i'm pumping about 375 hp w/stock mufflers...not very quiet at all...in fact, people ask me all the time if i chambered exhaust or flowmasters?
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Melting Slicks
Joined: Apr 2000
Posts: 3,286
Likes: 8
From: San Jose California
Re: Quiet mufflers for C3? (Redshark6974)
I have stock mufflers on the 74...i'm pumping about 375 hp w/stock mufflers...not very quiet at all...in fact, people ask me all the time if i chambered exhaust or flowmasters?
Chuck
Drifting
Joined: Mar 2001
Posts: 1,600
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From: Valencia (near LA) CA
Re: Quiet mufflers for C3? (Chuck Harmon)
Has anyone used the Walkers?
I have Flowmaster 50s with an X pipe and the drone at 1700 rpms is horrible! With the overdrive transmission am at 1700 a lot of the time... I need something quiet.
~Jay
I have Flowmaster 50s with an X pipe and the drone at 1700 rpms is horrible! With the overdrive transmission am at 1700 a lot of the time... I need something quiet.
~Jay
Melting Slicks
Joined: May 2001
Posts: 2,700
Likes: 3
From: Lebanon KY
Re: Quiet mufflers for C3? (Sling Blade)
on my 81 when i first got my dual exhaust put on, i had dynomax mufflers. they were way to quiet. they did open up pretty good at about 2800 rpm and up tho. even the idle was quiet :crazy: i hated them. so i put on KBD's and love em. they're very loud and aggressive :reddevil
Race Director
Joined: Sep 1999
Posts: 11,361
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From: Plano TX
Re: Quiet mufflers for C3? (Jay M)
Has anyone used the Walkers?
I have Flowmaster 50s with an X pipe and the drone at 1700 rpms is horrible! With the overdrive transmission am at 1700 a lot of the time... I need something quiet.
~Jay
I have Flowmaster 50s with an X pipe and the drone at 1700 rpms is horrible! With the overdrive transmission am at 1700 a lot of the time... I need something quiet.
~Jay
Race Director
Joined: Sep 1999
Posts: 11,361
Likes: 383
From: Plano TX
Re: Quiet mufflers for C3? (shawn_cake)
I dumped the Flow 50's - too much low rpm drone.
Got some MagnaFlows - much less drone!
:cheers: :steering: :cheers:
Got some MagnaFlows - much less drone!
:cheers: :steering: :cheers:
Melting Slicks
Joined: May 2001
Posts: 2,700
Likes: 3
From: Lebanon KY
Re: Quiet mufflers for C3? (Tom78)
so i put on KBD's and love em. they're very loud and aggressive :reddevil
Forgive me for asking... but what are KBD's?
Tom
Forgive me for asking... but what are KBD's?
Tom
http://www.ecklers.com/product.asp?p...FVEKXNFUH34PFC
i forgot to mention i have them on my 86 also :yesnod: i have sound files of it if anyone is interested altho the two cars sound totally different. the 81 has dual exhaust while the 86 has the factory exhuast without the cats :smash:
[Modified by corvettemaster, 11:08 PM 10/20/2003]
