best Exhaust solution for C3?
Thread Starter
Instructor
Joined: Aug 2003
Posts: 230
Likes: 0
From: Somewhere in Mo
best Exhaust solution for C3?
is there a consensus amongst those in the know of the best overall solution for a driver c3? the best fitting, sounding kits available.? I'm afraid to take it to the local "joe" at the muffler shop and have him bend a bunch of pipe if theres a better solution. (I been working on my '71 for a year and exhaust is all I lack!!! yee haaa!)
thanks again....
Tim
thanks again....
Tim
Team Owner
Joined: Apr 1999
Posts: 21,953
Likes: 1,445
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
The best thing you can do: Modify or replace your cross member so so your true duals can come straight back from your headers.
I tore my whole exhaust system of many years ago when my car was still new. I bolted on my headman 1 5/8th's headers and drove down to the local muffler shop. They really did a nice job
Glass packs were kind of the thing back then so I went with 3 inch in and out with chrome tips basically in the same position as the stock mufflers. I had already removed my spare tire carier assembly for weight loss.
Now I have big stainless packed race mufflers and an "H" pipe on my three inch system.
My advice is go 3 inch the first time and that way your not going to have to improve it later. Nothing makes a rumble like big throaty pipes. they are kind of quiet until you step on the go petal!
I tore my whole exhaust system of many years ago when my car was still new. I bolted on my headman 1 5/8th's headers and drove down to the local muffler shop. They really did a nice job
Glass packs were kind of the thing back then so I went with 3 inch in and out with chrome tips basically in the same position as the stock mufflers. I had already removed my spare tire carier assembly for weight loss.
Now I have big stainless packed race mufflers and an "H" pipe on my three inch system.
My advice is go 3 inch the first time and that way your not going to have to improve it later. Nothing makes a rumble like big throaty pipes. they are kind of quiet until you step on the go petal!
Race Director
Joined: Dec 1999
Posts: 16,945
Likes: 9
Originally Posted by gkull
The best thing you can do: Modify or replace your cross member so so your true duals can come straight back from your headers.
That's exactly what I did. I severed the crossmember and moved the exhaust holes further outboard:
I've got 3" duals also, had the same size w/ old motor. I also have 3" duals on my truck with Dynomax race bullets (the shorter ones) and theya re not quiet, even at idle there's a real rumble. When you get on it the fun really starts. No H or X pipes in any of my systems. One thing I did was isntall vortex header cone inserts in my truck exhaust to remove the raspy sound at WOT, it worked like a champ. Noise levels didn't reduce but now it's a deep roaring sound all the time.
Last edited by Twin_Turbo; Aug 6, 2004 at 09:57 AM.
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Race Director
Joined: Nov 2000
Posts: 11,872
Likes: 12
From: Waterloo ontario Canada
I don't agree with running the exhuast through the crossmember, I modified mine so the exhaust cames straight back off the headers and under the crossmember, the pipe does not dip down in any way, it comes staight back. I can drop the whole exhaust easily without pulling pipes apart.
I run 3 inch, I need to but most can get away with 2 1/2. 3 inch is just naturally louder.
I run dynamax super turbo's. I hate noise and I hate resonance.
I also run a cross pipe right behind the transmission crossmember.
I run 3 inch, I need to but most can get away with 2 1/2. 3 inch is just naturally louder.
I run dynamax super turbo's. I hate noise and I hate resonance.
I also run a cross pipe right behind the transmission crossmember.
Melting Slicks
Joined: Feb 2003
Posts: 3,053
Likes: 4
St. Jude Donor '03,'11
i use 304 stainless flex pipe for my entire exhaust system. Its extremely easy to install yourself and you can route it over the rear spring so the pipe doesn't constantly bottom out on bumps.
I love mine 
Race Director
Joined: Dec 1999
Posts: 16,945
Likes: 9
Originally Posted by turtlevette
i use 304 stainless flex pipe for my entire exhaust system. Its extremely easy to install yourself and you can route it over the rear spring so the pipe doesn't constantly bottom out on bumps.
LOL 
I want to see a pic of that.
Le Mans Master
Joined: Sep 2000
Posts: 5,635
Likes: 4
From: Orlando Floriduh
Check out Allens exhaust. You can get about anything you want and it's all made for corvettes. Bolt on.... High quality, good service. http://www.allencorvetteexhaustsystems.com/
Le Mans Master
Joined: Mar 2004
Posts: 7,493
Likes: 1,501
From: Little Rock AR
This is what I have to install on my '80 soon. It is a MAD true duals system with a pair of Dynomax Super Turbos. It should sound good but not real loud. No crossmember mods for this setup. No cat either
-Mark.
-Mark.
