Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - Flowmaster Super 40
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Old 08-19-2007, 07:25 PM
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Blazin72 Blazin72 is offline
You got a leaky spark tube...
 
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I think you answered your own question. I have Super 40s on my 72 Blazer and the exhaust is identical (headers, pipe size, mufflers) to a friends 71 3/4 ton Chevy. Both are 350s but my engine makes twice the horsepower and is significantly louder. Furthermore, the exhaust got even louder after I installed a small blower.
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