New Exhaust System
Thread Starter
Heel & Toe
Joined: Feb 2010
Posts: 18
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New Exhaust System
I want to install a new exhaust system in my 77 anybody have any recomendations, something that will improve performance?
What is the difference between 2.5 inch and 3 inch performance wise? I have heard 2.5 inch is better but why?
What is the difference between 2.5 inch and 3 inch performance wise? I have heard 2.5 inch is better but why?
Last edited by purenergy; Feb 13, 2010 at 11:10 PM.
Drifting
Joined: Aug 2009
Posts: 1,635
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From: Enid Oklahoma
Tech Contributor
Joined: Jun 2004
Posts: 20,864
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From: I tend to be leery of any guy who doesn't own a chainsaw or a handgun.
The 2.5 inch setup will be less expensive and easier to install.
Thread Starter
Heel & Toe
Joined: Feb 2010
Posts: 18
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The engine wont be stock it will be something similar to this:
http://www.gmhorsepower.com/LS9-ZR1-Corvette-Motor.php
http://www.gmhorsepower.com/LS9-ZR1-Corvette-Motor.php
Race Director
Joined: Aug 2007
Posts: 10,977
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From: Canboro Ontario
I like the under car chambered system as well, nice fit under the car and great sound, if you like a good rumble. They are also alot cheaper than side pipe conversion and no burnt legs, 
Tech Contributor
Joined: Jun 2004
Posts: 20,864
Likes: 960
From: I tend to be leery of any guy who doesn't own a chainsaw or a handgun.
The engine wont be stock it will be something similar to this:
http://www.gmhorsepower.com/LS9-ZR1-Corvette-Motor.php
http://www.gmhorsepower.com/LS9-ZR1-Corvette-Motor.php
Racer
Joined: Nov 2005
Posts: 409
Likes: 5
From: Orange County CA
I have the Magnaflow system from Corvette Central on my 71 small block.
It has a deep rumble at idle, but is just a little louder than stock at freeway speeds.. No droning.. I like the sound.. It fits perfect and the best part is that it was under $350 for the entire system.
It has a deep rumble at idle, but is just a little louder than stock at freeway speeds.. No droning.. I like the sound.. It fits perfect and the best part is that it was under $350 for the entire system.
Race Director
Joined: Dec 2007
Posts: 14,345
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From: Hartselle AL
St. Jude Donor '09
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Intermediate
Joined: Mar 2009
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Really open question. i went with hooker procomp headers(ceramic). 3inch pipe, a magnaflow X and borla xr-1 cans. now i sound really cool driving around town with only one arm and one leg.
. almost everyone will have different opinions on this. with all the test on backpressure with pipe sizeand chambered vs open. not to mention sound.
. almost everyone will have different opinions on this. with all the test on backpressure with pipe sizeand chambered vs open. not to mention sound.
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