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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 02-07-2005, 11:39 PM   #1
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with a my tax money in buying an new muffler mines looking really rusty and it getting louder everyday so im gonna be getting a new one i want a flowmaster but which one do i need and is the stock on welded to the inlet pipe?
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Old 02-08-2005, 12:03 AM   #2
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You need the 80 series, with a 2.5" inlet, for a Camaro. Jeg'* has it, summit racing does, etc. Shouldn't be more then $80 MAX.
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Old 02-08-2005, 12:27 AM   #3
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why not just chop it and put a straight through pipe on?
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Old 02-08-2005, 01:51 AM   #4
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Quote:
Originally Posted by rjolly87
why not just chop it and put a straight through pipe on?
if you have EVER heard a 3.8 with no muffler, you would wonder why you asked that question, plus there would be a decrease in performance and prolly illegal
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Old 02-08-2005, 01:54 AM   #5
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I got the flowmaster 80 on my car......She sounds great.....IMO. The stocker muffler is welded on the pipe, so you will have to cut it out.....It'* easy.
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Old 02-08-2005, 02:06 AM   #6
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Quote:
Originally Posted by rjolly87
why not just chop it and put a straight through pipe on?
My own car without a resonator, and Magnaflow HiFlow Cat and Magnaflow crossflow muffler was DEAFENING.

You're kidding, right?

Any F-body Crossflow muffler with the right inlet and outlet diameters will be fine.
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Old 02-08-2005, 09:01 AM   #7
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will i lose any performance like i did when i had to gut my cat on my buick i lost alot of low end.
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Old 02-08-2005, 11:55 AM   #8
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You shouldn't lose any low end when gutting a cat, or putting a high flow one in..

Yeah it'* loud. I fired mine up @ 2AM with just a Cat and pipe. It doesn't really sound bad, but it'* LOUD. I found my pix of a double glass pack setup, i'll get them up when I'm at home.
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Old 02-08-2005, 11:58 AM   #9
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Quote:
Originally Posted by L27Buick
will i lose any performance like i did when i had to gut my cat on my buick i lost alot of low end.
That'* a matter of opinion, and other members have observed the same. This has the potential to start another 'backpressure' argument, but the experiences are real.

Gutting a cat is a bad idea to begin with for several other reasons. Keep the components, but replace them with higher-flow designs.
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Old 02-08-2005, 12:22 PM   #10
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I have an 87 but i didn't want to start a new post. The 80 series will fit just the same on mine right? Jegs has it for like 90 bucks shipped. Not a bad deal. When you remove the old muffler does the new one slip in to the old inlet and can be clamped or does it have to be welded all around?
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