flowmaster 80 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 07-24-2005, 09:54 PM   #1
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Hi, I think this is the right muffler to put on a 94 bonneville 3800 series 1. Could some one tell me if this is the right one. Thank you.

80 series Flowmaster muffler part #42583. It has a 2 1/2"ID inlet and outlet on one end and a 2 1/2" outlet on the other
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Old 07-24-2005, 10:17 PM   #2
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sounds right! I got the same set up!
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Old 07-25-2005, 12:52 AM   #3
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Yep, thats the muffler on my car....42583
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Old 07-25-2005, 03:36 AM   #4
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timeout hold up wait *blows whistle*

alright is it an SE or an SSE? everyone forgets the SE only has 2.25 inch piping as compared to the SSE/SSEi which have 2.5....it will still work, just whoever installs it will have to use a reducer of some kind, in other words mo money...
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Old 07-25-2005, 04:37 PM   #5
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I believe the 80 series only comes in 3 inch and 2.5 inch, so I don't think you really have a choice.
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Old 07-27-2005, 04:53 PM   #6
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I have an 80 series on mine, have a 2.25 to 2.5 reducer too. sounds nice as **** though.
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Old 07-27-2005, 07:17 PM   #7
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I have the 2.5" 80 series on my SE. It works fine but has a pretty strong interior resonance.
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