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1969 mufflers

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  • Bill C.
    Expired
    • April 12, 2010
    • 25
    #1

    1969 mufflers

    The car is a 69 427/390. I've replaced the exhaust system with one from Volunteer (2 1/2"). It's a good system and fit's well but it's a little too quiet. I'm looking for a 'bolt-on' replacement muffler with a little more rumble. So far I've found the Dynamax Super Turbo muffler as a 'bolt-on' replacement. Anyone have any experience with these...or any other thoughts?
    Thanks...Bill
    Tags: None
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    • Steven B.
      Extremely Frequent Poster
      • June 30, 1982
      • 3976
      #2
      Re: 1969 mufflers

      Originally posted by Bill Cody (51680)
      The car is a 69 427/390. I've replaced the exhaust system with one from Volunteer (2 1/2"). It's a good system and fit's well but it's a little too quiet. I'm looking for a 'bolt-on' replacement muffler with a little more rumble. So far I've found the Dynamax Super Turbo muffler as a 'bolt-on' replacement. Anyone have any experience with these...or any other thoughts?
      Thanks...Bill

      Bill, I have a set on my modified L-82 and have for quite awhile. They sound nice, good rumble low and "healthy" at mid to high rpm's. The car is used as an autocrosser, track days and street car. I like the quality and fit, no problems at all. Previously I had a complete Monza system and I like these as well. The car was chassis dynoed with these and a couple of other mufflers and these came out on top for torque and HP. If I can find my chassis dyno sheets I will post. I would buy again.

      Steve
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        • Scott S.
          Extremely Frequent Poster
          • September 11, 2009
          • 1961
          #3
          Re: 1969 mufflers

          Originally posted by Bill Cody (51680)
          The car is a 69 427/390. I've replaced the exhaust system with one from Volunteer (2 1/2"). It's a good system and fit's well but it's a little too quiet. I'm looking for a 'bolt-on' replacement muffler with a little more rumble. So far I've found the Dynamax Super Turbo muffler as a 'bolt-on' replacement. Anyone have any experience with these...or any other thoughts?
          Thanks...Bill
          How about the relatively recent N11 off-road exhaust made to GM blueprint specs and offered through Corvette Central? It looks like they're offering just the mufflers now, as opposed to the entire exhaust system.

          The information on the page at the link below says the N11 exhaust was available as an option from 1964 through 1968, and the design allows them to be used on model years 1963 through 1972.

          Rumble-factor should be excellent


          http://www.corvettecentralexhaust.co...k_off_road.php
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            • Bill C.
              Expired
              • April 12, 2010
              • 25
              #4
              Re: 1969 mufflers

              Thanks Guys...appreciate the input. Looks like I've got a couple of good solutions.
              Bill
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                • Paul H.
                  Very Frequent User
                  • September 30, 2000
                  • 678
                  #5
                  Re: 1969 mufflers

                  I have the Dynomax Super Turbo mufflers on my 68 427/390. Nice, muscle car rumble without the resonance. They also flow as good or better than anything out there.
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                    • Dick W.
                      Former NCRS Director Region IV
                      • June 30, 1985
                      • 10483
                      #6
                      Re: 1969 mufflers

                      I bought a set of '68 N-11's, when they were still available from GM, and they sound like a Corvette exhaust should. Not too loud, but definitely not the standard '72 BB sound
                      Dick Whittington
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                        • James B.
                          Very Frequent User
                          • March 1, 1985
                          • 217
                          #7
                          Re: 1969 mufflers

                          Originally posted by Dick Whittington (8804)
                          I bought a set of '68 N-11's, when they were still available from GM, and they sound like a Corvette exhaust should. Not too loud, but definitely not the standard '72 BB sound

                          Does this mean that the N-11 mufflers's are noticably louder than the original factory equipped '72 BB Corvette mufflers?
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