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exhaust inlet and outlet size?

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Old 05-07-2010, 01:13 PM
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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.
Old 05-08-2010, 07:53 AM
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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.
Old 05-08-2010, 08:45 AM
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Not sure if I remember right, but I think mine is 2.5" in and 1.75 out.
Old 05-08-2010, 11:15 AM
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Originally Posted by IronWolfe11
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.
Old 05-11-2010, 01:23 PM
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thanks guys
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