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Old 05-07-2010, 02:13 PM   #1
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Default exhaust inlet and outlet size?

I know i need a 80s series muffler for my 1999 sse, what size is the inlet and outlet on it? Or if i were to order off flowmastermufflers.com, which options would i pick? ( it says they only offer it for chevys, and pontiacs, but when i click on the pontiac option, it says they only offer it for firebirds.) a part number would be nice if anyone knew what it was.
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Old 05-08-2010, 08:53 AM   #2
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I believe the exhaust is 2.5" all the way back. Most of the 80 series i've seen is 3" in and 2x2.5" out. When i get mine i plan on just putting a 3" to 2.5" reducer in to make it work.
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Old 05-08-2010, 09:45 AM   #3
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Not sure if I remember right, but I think mine is 2.5" in and 1.75 out.
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Old 05-08-2010, 12:15 PM   #4
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Quote:
Originally Posted by IronWolfe11 View Post
I believe the exhaust is 2.5" all the way back. Most of the 80 series i've seen is 3" in and 2x2.5" out. When i get mine i plan on just putting a 3" to 2.5" reducer in to make it work.
yup that'* what i did with my borla muffler. not too hard at all.
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Old 05-11-2010, 02:23 PM   #5
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thanks guys
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