Mufflers
Thread Starter
Instructor
Joined: Apr 2021
Posts: 133
Likes: 5
Mufflers
I have a 73 350 with hooker headers and out the back pipes and I can’t decide what mufflers to get I still want the car to be very loud and I don’t want any restriction to very little restriction and very little power loss from the muffler anyone have any advice on what mufflers would be good
Drifting
Joined: Jun 2005
Posts: 1,950
Likes: 498
From: Chino Hills CA
I posted something regarding this a little while ago which may interest you. If you buy a pair a resonators (aka glass packs), you can control the sound. For example, if you purchased 3" ID glasspacks that are 18' long, they won't really make your exhaust that loud. However, a length of 3" plain old exhaust pipe will slip inside the glass pack perfectly. If you inserted a full 18" of pipe inside your glass pack, it would be as loud as no mufflers at all. If you inserted it halfway, it would be quieter than no mufflers, but louder than the original glasspack. So you could essentially "tune" the sound by how much plain pipe was inserted. Plus these mufflers are a bargain, $50-$75 a pair shipped on ebay.
Thread Starter
Instructor
Joined: Apr 2021
Posts: 133
Likes: 5
I posted something regarding this a little while ago which may interest you. If you buy a pair a resonators (aka glass packs), you can control the sound. For example, if you purchased 3" ID glasspacks that are 18' long, they won't really make your exhaust that loud. However, a length of 3" plain old exhaust pipe will slip inside the glass pack perfectly. If you inserted a full 18" of pipe inside your glass pack, it would be as loud as no mufflers at all. If you inserted it halfway, it would be quieter than no mufflers, but louder than the original glasspack. So you could essentially "tune" the sound by how much plain pipe was inserted. Plus these mufflers are a bargain, $50-$75 a pair shipped on ebay.
- thank you for responding I’ll look into that, would you say that the glass packs have a good sound and tone or would a normal muffler have a better tone?
Old Pro Solo Guy
Joined: Dec 2017
Posts: 8,103
Likes: 4,465
From: Marlton NJ
Pypes has 3 levels of loud. Even the quiet street ones are pretty loud when you get on it. Those are somewhat tolerable at cruise. I believe the turbo-pros are even quieter and somewhat similar to the popular Magnaflows and pretty decent.
The other three not so much....
Duntov was quoted as saying the quiet factory mufflers kill 50 HP on a Big Block....
https://pypesexhaust.com/c-702363-gm...-corvette.html
https://pypesexhaust.com/c-702451-mu...-mufflers.html
The other three not so much....
Duntov was quoted as saying the quiet factory mufflers kill 50 HP on a Big Block....
https://pypesexhaust.com/c-702363-gm...-corvette.html
https://pypesexhaust.com/c-702451-mu...-mufflers.html
Last edited by leigh1322; Aug 16, 2021 at 01:28 PM.
Instructor
Joined: Nov 2016
Posts: 169
Likes: 43
From: Stockholm Sweden
I have a 73 350 with hooker headers and out the back pipes and I can’t decide what mufflers to get I still want the car to be very loud and I don’t want any restriction to very little restriction and very little power loss from the muffler anyone have any advice on what mufflers would be good
Black widow and Borla is bad a** 😎
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Drifting
Joined: Jun 2005
Posts: 1,950
Likes: 498
From: Chino Hills CA
If your hooker headers are long tube with equal length to the collectors, rather than y shaped shorties, you can expect a better sound when uncorked. I'd also recommend some kind of h or x pipe. That being said, run with no mufflers and see if you like the sound. Glass packs will retain the sound at a lower volume. I had some flowmasters on my other SBC which sounded the best at 2300 rpm but not loud enough for me. Ended up installing electric cutouts, which unfortunately won't fit on a C3. You could always clamp rather than weld in your mufllers. That way you could always substitute a set of straight pipes when the mood strikes.
Thread Starter
Instructor
Joined: Apr 2021
Posts: 133
Likes: 5
If your hooker headers are long tube with equal length to the collectors, rather than y shaped shorties, you can expect a better sound when uncorked. I'd also recommend some kind of h or x pipe. That being said, run with no mufflers and see if you like the sound. Glass packs will retain the sound at a lower volume. I had some flowmasters on my other SBC which sounded the best at 2300 rpm but not loud enough for me. Ended up installing electric cutouts, which unfortunately won't fit on a C3. You could always clamp rather than weld in your mufllers. That way you could always substitute a set of straight pipes when the mood strikes.
-they are long tube and I wasn’t planning on running a x pipe or anything just bought out the back pipes that hook up to each header and never cross over
Race Director
Joined: Mar 2018
Posts: 10,770
Likes: 2,199
From: Golden Colorado
Check out the “chambered” exhaust. They sound good but are a little loud when you romp on it. The good thing is if you decide later they are to loud you can add resonators where the stock muffler goes by just cutting out some pipe. 