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Old 10-16-2006, 02:54 PM
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Join Date: Oct 2003
Location: Queen Creek, AZ
Cobra Make, Engine: Midstates, Vette suspension, Baer 6P brakes, 540 cid Chevy, Haltech Fuel Injection
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I just ordered some goodies for my new sidepipes:

Dynomax 23.5" long X 3"ID X 4"OD Bullets
Car Chemistry 3 disc inserts for the 3.5 OD collector, to go just in front of the Dynomax Bullets
Hooker Weld-on collector 2.125 inlets and 3.5 OD outlet

It will be a while before I run this setup, since I just lunched my motor and will need to build a new 540 BBC for the Cobra before I can hear how loud the new pipes are.

My theory is to use the inserts to bounce the sound around and the bullets to absorb some of the sound. I suspect the two methods each work best at different frequencies, so I hope to have a reasonable sound level at the exit. If the CC inserts are too restrictive, I can remove them since I will have a collector flange bolt joint.
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