chambered exhaust
Thread Starter
Le Mans Master
Joined: Jun 2007
Posts: 7,801
Likes: 0
From: Crush your enemies, see them driven before you, and hear the lamentations of the women TX
chambered exhaust
Hey all.
I've heard good things of chambered exhausts. I've also heard a friend's mustang with them. Very mellow but nasty too.
Anyone using them?
Anyone know offhand the diameter of the passthrus in the frame brace?
Don't know that it would be the smartest thing I've ever done to pass them thru the brace. Can't say why, I've just never had the option of doing that before. There might be issues for and against that routing, dunno. Just at the moment I've got dual cats and glasspack dual tips on the back coming off coated headers. Don't particularly like the welding/clearances on the job. The cats may stay on until after the car is inspected. Never hurts to copper all your bets
I work at night but what the hell, the neighbors hate me already.
I've heard good things of chambered exhausts. I've also heard a friend's mustang with them. Very mellow but nasty too.
Anyone using them?
Anyone know offhand the diameter of the passthrus in the frame brace?
Don't know that it would be the smartest thing I've ever done to pass them thru the brace. Can't say why, I've just never had the option of doing that before. There might be issues for and against that routing, dunno. Just at the moment I've got dual cats and glasspack dual tips on the back coming off coated headers. Don't particularly like the welding/clearances on the job. The cats may stay on until after the car is inspected. Never hurts to copper all your bets
I work at night but what the hell, the neighbors hate me already.
Safety Car
Joined: Aug 2000
Posts: 3,943
Likes: 44
From: Florham Park NJ Port Credit Ontario
I have chambered pipes. I get compliments all the time (not from my neighbor. Although she always gestures with her hand that I am number one!)
Anyway, at idle it sounds like a muscle car should. Deep low tones. At cruise, you can easily have a conversation with your passenger or listen to the radio and at WOT, all hell breaks loose! It'll make little kids run for cover.
On pre 75 cars, the exhaust is routed thru the x-member. I'd guess that you could put a 3" pipe in there with a bit of clearance as not to hit.
Anyway, at idle it sounds like a muscle car should. Deep low tones. At cruise, you can easily have a conversation with your passenger or listen to the radio and at WOT, all hell breaks loose! It'll make little kids run for cover.
On pre 75 cars, the exhaust is routed thru the x-member. I'd guess that you could put a 3" pipe in there with a bit of clearance as not to hit.
Melting Slicks
Joined: May 2003
Posts: 2,387
Likes: 2
From: Meriden CT
I personally dont like the sound. They sound like glasspacks to me. Also, I've read numerous posts about them being restrictive and robbing power. Do a search, they have been discussed many times.
Drifting
Joined: May 2007
Posts: 1,491
Likes: 2
From: North Royaton Ohio
I have a 2 1/2" system from MidAmerica. While I like the sound and performance gains, they fit like crap. I know there's some other vendors out there that sell chambered systems, too. Just don't get it from MidAmerica. Do yourself a big favor and read this thread:
http://forums.corvetteforum.com/show...merica+exhaust
http://forums.corvetteforum.com/show...merica+exhaust
Melting Slicks
Joined: Sep 2002
Posts: 2,783
Likes: 2
From: Engineers do it better.
This comes up almost every other month. So far no one has posted any numbers. So without data, it's all I agree with everything Stewart said. They sound good at idle, and all hell breaks loose at WOT.
My advise is to listen to one in person then buy. And don't buy from Mid America. Fit is VERY poor.
Drifting
Joined: May 2007
Posts: 1,491
Likes: 2
From: North Royaton Ohio
This comes up almost every other month. So far no one has posted any numbers. So without data, it's all I agree with everything Stewart said. They sound good at idle, and all hell breaks loose at WOT.
My advise is to listen to one in person then buy. And don't buy from Mid America. Fit is VERY poor.
Stock, my 81 ran a 15.874 in the 1/4
After chambered and no other mods, it ran a 15.253
Myth Busted!
Tech Contributor
Joined: Aug 1999
Posts: 15,132
Likes: 3,938
From: Connecticut, USA
I had them from the mfg, not M/A. The fit was as bad, had to have a shop cut and fab them to fit. They were loud but not to my liking. Had them on a 69 & 75 and finally sold them. Went with flowmaster 40 & 50's. If you want loud get the 40's. Performance felt better but didn't do any trials. Years ago here there were several guys who did and found the chambered were more restrictive. To each his own, hopefully the fit is better these days.
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Burning Brakes
Joined: Feb 2004
Posts: 924
Likes: 2
From: Kearneysville West Virginia
I had them on a 64 I sold and loved the sound. I put a set on my 70 BB and love the sound. My son said, "hey dad, they are a little loud aren't they". But, not too loud. Good sound. I bought both sets off Ebay from the same guy. The fit was perfect, no problems. I am pretty certain the Ebay name of the guy was hrvette.
Thread Starter
Le Mans Master
Joined: Jun 2007
Posts: 7,801
Likes: 0
From: Crush your enemies, see them driven before you, and hear the lamentations of the women TX
but had been considering replacing the cats with the chambered exhausts. Should give me good flow and between the chambered and the tips should give me at least a gesture at noise control.My only problem is the squirrley piping on here now. Passenger side comes straight thru the crossmember and out like 34<?> inches to the first bend. The driver side pipe comes out the crossmember and angles into the other cat.
I'm a little afraid to replace the entire back end as I don't have a spare carrier at the moment and don't want to pipe it blind. What length are your chambered mufflers? I know that several places make the length to order.
It's OK, I work at night and the neighbors hate me anyway....
Melting Slicks
Joined: Aug 2003
Posts: 2,135
Likes: 2
From: Dayton Oh
I did MAD's for a couple of years until my old ears got too tired of the resonance. The installation was easy after figuring out what needed to be done since MAD did not supply instructions. Overall the MAD product was acceptable both in price and in durability. However, after 2 years, I was ready for something more suited to a 53 yr old.
Safety Car
Joined: Apr 2001
Posts: 3,581
Likes: 28
From: Spring, Texas
I have the Allen's 2.5" aluiminzed steel chambered exhaust on my otherwise stock 72 LT-1 and it sounds great. Delivers the Corvette side pipe type sound at idle and is nice and loud under acceleration.
Drifting
Joined: Jan 2006
Posts: 1,944
Likes: 22
From: Yooperville MI
I probably have the same 4 muffler Allens system and it sounds just like the old side pipes. Practically everyone that's heard my car calls Allen's. If you purchase a chambered system, it's best to deal directly with the manufacturer so you know what you are getting. As with any packaged exhaust system, cutting and fitting is required. The manufacturers make the pipes longer than necessary so you can obtain the best fit.
Le Mans Master
Joined: Oct 2001
Posts: 5,145
Likes: 125
From: The Motor City
I agree. The fit is bad but it is cheap so you get what you pay for.
Burning Brakes
Joined: Nov 2006
Posts: 954
Likes: 40
2022 C3 of the Year Finalist - Modified
Hi
I installed chambered exhausts few years ago that I bought at corvette show at Carlisle PA.
You can listen to the sound in this link.
http://youtube.com/watch?v=kwh4JXPshfE
Avner
I installed chambered exhausts few years ago that I bought at corvette show at Carlisle PA.
You can listen to the sound in this link.
http://youtube.com/watch?v=kwh4JXPshfE
Avner
Thread Starter
Le Mans Master
Joined: Jun 2007
Posts: 7,801
Likes: 0
From: Crush your enemies, see them driven before you, and hear the lamentations of the women TX
I did MAD's for a couple of years until my old ears got too tired of the resonance. The installation was easy after figuring out what needed to be done since MAD did not supply instructions. Overall the MAD product was acceptable both in price and in durability. However, after 2 years, I was ready for something more suited to a 53 yr old.
Drifting
Joined: Jan 2006
Posts: 1,944
Likes: 22
From: Yooperville MI
Thread Starter
Le Mans Master
Joined: Jun 2007
Posts: 7,801
Likes: 0
From: Crush your enemies, see them driven before you, and hear the lamentations of the women TX
I never got old; I just lived and the years went by (or is it "bye"
).All my folks are long lived. Grandmother died the day after her 95th birthday; too much partying I guess. Mother is 80 and I can't keep up with her.
Everything works fine. I do miss my hair tho....
It's long and gray but I have this stylish pink racing stripe......