Thread: How Loud is Your Cobra ?
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Old 08-02-2012, 08:28 PM
Sidekick Sidekick is offline
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The Superformance mufflers are 2 inches dia inside. I replaced mine with 3 inch so as not to choke the crap out of my Roush 427. The stock superformance and other mufflers of the 2 inch size are really for a small block (or) around but not exceeding 400HP
Last edited by Sidekick; 08-02-2012 at 08:38 PM..
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