Chambered side pipes sound question
Thread Starter
Drifting
Joined: Aug 2016
Posts: 1,794
Likes: 937
From: Arizona
Chambered side pipes sound question
Well im down to last few items to order for my 70, im down to which chambered side pipes to order.
Looks like High Flo Performance is my only choice for chambered side pipes as Allen's is no longer in business.
High Flo offeres stock sound and mild sound... looking for some feedback on both.
Looks like High Flo Performance is my only choice for chambered side pipes as Allen's is no longer in business.
High Flo offeres stock sound and mild sound... looking for some feedback on both.
Melting Slicks
Joined: Feb 2017
Posts: 3,293
Likes: 1,283
From: Phoenix, AZ to Quakertown, PA.
C6 of Year Finalist (appearance mods) 2019
Have you checked Classic Chambered Exhaust? The owner will make what ever you want or choose from his inserts.
I’m running the VettePack inserts, not for the faint of heart, but I’m old and half deaf so it brings me back to life….
https://www.classicchambered.com/cla...html#corvettes
scroll down to the black 76 vette, he’s running VettePack inserts also.
I’m running the VettePack inserts, not for the faint of heart, but I’m old and half deaf so it brings me back to life….
https://www.classicchambered.com/cla...html#corvettes
scroll down to the black 76 vette, he’s running VettePack inserts also.
Last edited by SixAddict; Aug 15, 2025 at 04:04 PM.
Thread Starter
Drifting
Joined: Aug 2016
Posts: 1,794
Likes: 937
From: Arizona
Have you checked Classic Chambered Exhaust? The owner will make what ever you want or choose from his inserts.
I’m running the VettePack inserts, not for the faint of heart, but I’m old and half deaf so it brings me back to life….
https://www.classicchambered.com/cla...html#corvettes
scroll down to the black 76 vette, he’s running VettePack inserts also.
I’m running the VettePack inserts, not for the faint of heart, but I’m old and half deaf so it brings me back to life….
https://www.classicchambered.com/cla...html#corvettes
scroll down to the black 76 vette, he’s running VettePack inserts also.
Is my vette stock?? HAHA
Joined: Oct 2015
Posts: 20,222
Likes: 9,359
From: Im not allowed to tell you
2020 C3 of the Year Finalist - Modified
2020 Corvette of the Year Finalist (performance mods)
2019 C3 of Year Winner (performance mods)
2016 C3 of Year Finalist
I have the wild version....not for the faint of heart...cant help with the other two yet....Im considering the mild version in a 2.25 inch pipe. I think its the biggest they can fit in the chamber and still have the fiberglass baffle
Racer
Joined: May 2025
Posts: 348
Likes: 45
From: Georgia
[QUOTE=Rescue Rogers;1609031488]I have the wild version....not for the faint of heart...cant help with the other two yet....Im considering the mild version in a 2.25 inch pipe. I think its the biggest they can fit in the chamber and still have the fiberglass baffle[/QUOTEL
Louder the Better
Louder the Better
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Racer
Joined: May 2025
Posts: 348
Likes: 45
From: Georgia
[QUOTE=Rescue Rogers;1609031488]I have the wild version....not for the faint of heart...cant help with the other two yet....Im considering the mild version in a 2.25 inch pipe. I think its the biggest they can fit in the chamber and still have the fiberglass baffle[/QUOTEL
Louder the Better
Louder the Better
Safety Car
Joined: May 2001
Posts: 4,759
Likes: 1,647
From: Fairfax Virginia
I have a major hearing loss and I have been "tortured" by long rides in a 1967 C2 with side-pipes. I love the sound but not the Noise. I have a set of Allen's Stainless Exhaust Chambered pipes and they were offered in three levels of sound. Stock, Mid-level and NOISY, I have the mid-level as they are pretty loud behind the car but while driving you can listen to the stereo.
Chambered Pipes like mine have no removable baffles inside them. The baffles are inside the system with no options available after they were built. Using the Chambered pipes with a set of long tube headers from Hedman the sounds coming from the rear of the car is music. With 12.25-1 compression and a tweaked 427 BB engine the exhaust "spits" and "pops" out the pipes in the rear without any exhaust crossover pipe to confuse which side was firing. I bought my system in Aluminized Steel and it is still working 30 years later.
The sounds coming from the chambered exhaust say that this engine is something to fear, where the factory exhaust sounded like a kitten purring.
Chambered Pipes like mine have no removable baffles inside them. The baffles are inside the system with no options available after they were built. Using the Chambered pipes with a set of long tube headers from Hedman the sounds coming from the rear of the car is music. With 12.25-1 compression and a tweaked 427 BB engine the exhaust "spits" and "pops" out the pipes in the rear without any exhaust crossover pipe to confuse which side was firing. I bought my system in Aluminized Steel and it is still working 30 years later.
The sounds coming from the chambered exhaust say that this engine is something to fear, where the factory exhaust sounded like a kitten purring.
Race Director
Joined: Mar 2016
Posts: 14,406
Likes: 8,212
From: Napa Valley California
I don’t think he is referring to the pops you hear from a lean burn engine.
He is referring to the sounds of a high compression, cammed big cubic inch big block.
There is no better sound coming from two individual dual exhaust pipes.
No X or H pipes just raw muscle.
He is referring to the sounds of a high compression, cammed big cubic inch big block.
There is no better sound coming from two individual dual exhaust pipes.
No X or H pipes just raw muscle.
Racer
Joined: Oct 2018
Posts: 457
Likes: 132
From: England
I've got the 2.25" baffle with ceramic blanket version that Rescue Rogers mentioned, along with the Hedman side exit headers. It's pretty quiet at tickover or low speed cruise, but gets very aggressive when you accelerate hard. 
Is my vette stock?? HAHA
Joined: Oct 2015
Posts: 20,222
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From: Im not allowed to tell you
2020 C3 of the Year Finalist - Modified
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RIght now they hear me coming from 1/4 mile away at normal speeds with the wild version so I am going to get these later this Sept. I like them but the police at the beaches are tired of the locals complaining about the youngsters with their rev limiter antics an their pop off valve demonstrations. This would be good if they hold the sound down somewhat reasonably up to 3500-4000 rpm. With the 5 speed I am cruising at 2700 rpm at 70-75 mph. I might put an electronic dump valve in front of the elbow if I go racing again and want it loud and those few extra horse
Race Director
Joined: Jan 2005
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From: Milford Michigan
Thread Starter
Drifting
Joined: Aug 2016
Posts: 1,794
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From: Arizona
I just got off the phone with Ryan at HighFlo Performance about the 2.25 inch pipes and he hadnt heard back from anyone on their experience with these. Im glad I saw your post. I am looking for something like that. Hoping to not lose too much power. Im hoping the straight through design will make up for the diameter loss.
RIght now they hear me coming from 1/4 mile away at normal speeds with the wild version so I am going to get these later this Sept. I like them but the police at the beaches are tired of the locals complaining about the youngsters with their rev limiter antics an their pop off valve demonstrations. This would be good if they hold the sound down somewhat reasonably up to 3500-4000 rpm. With the 5 speed I am cruising at 2700 rpm at 70-75 mph. I might put an electronic dump valve in front of the elbow if I go racing again and want it loud and those few extra horse
RIght now they hear me coming from 1/4 mile away at normal speeds with the wild version so I am going to get these later this Sept. I like them but the police at the beaches are tired of the locals complaining about the youngsters with their rev limiter antics an their pop off valve demonstrations. This would be good if they hold the sound down somewhat reasonably up to 3500-4000 rpm. With the 5 speed I am cruising at 2700 rpm at 70-75 mph. I might put an electronic dump valve in front of the elbow if I go racing again and want it loud and those few extra horse
Is my vette stock?? HAHA
Joined: Oct 2015
Posts: 20,222
Likes: 9,359
From: Im not allowed to tell you
2020 C3 of the Year Finalist - Modified
2020 Corvette of the Year Finalist (performance mods)
2019 C3 of Year Winner (performance mods)
2016 C3 of Year Finalist
Im putting back on my C3 style 2.5 inch pipes until I can pick up some quieter chambered pipes.....THe wild ones get loud on long rides on the side roads without the headphones. I cut them off after the turn to use the slip fit C2 style and I have a band clamp to butt them back together. Should be fine for the next month
Thread Starter
Drifting
Joined: Aug 2016
Posts: 1,794
Likes: 937
From: Arizona
Im putting back on my C3 style 2.5 inch pipes until I can pick up some quieter chambered pipes.....THe wild ones get loud on long rides on the side roads without the headphones. I cut them off after the turn to use the slip fit C2 style and I have a band clamp to butt them back together. Should be fine for the next month
Drifting
Joined: Jul 2004
Posts: 1,695
Likes: 65
From: Kissimmee fl
Finalist 2021 C3 of the Year - Modified
2017 C3 of Year Finalist
Cruise-In VIII Veteran
St. Jude Donor '07
I have the Classic Chambered 20-20 Corvette side pipe exhaust on my 69. I run shorty S/S headders, 2.5 in S/S pipe fitted to the chambered pipe, terminated with the Sweet Thunder 69 tips. This all fits under the 69 factory chrome covers. I love the sound. Not too loud at idle but sounds off when under acceleration.
Is my vette stock?? HAHA
Joined: Oct 2015
Posts: 20,222
Likes: 9,359
From: Im not allowed to tell you
2020 C3 of the Year Finalist - Modified
2020 Corvette of the Year Finalist (performance mods)
2019 C3 of Year Winner (performance mods)
2016 C3 of Year Finalist
I run the Hedman side exhaust headers with the ball and socket flange. I had the 69 style and measured the distance when I received the C2 chambered WILD style with the slip fit joint and cut enough that when they slipped together the bolt eye would line up in the back. I talked with a gentleman that has the quiet ones and he says they get plenty loud when you flatten the pedal. I think I will be going with those eventually and adding in an electric cutout to make them obnoxious when I want to show off and have that bit of extra horsepower.