Cool video of 68 barracuda changing from dual to single exhaust like the 273 commando

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  1. duster360

    duster360 FABO Gold Member FABO Gold Member

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    He swaps from dual to single exhaust to try and get the 273 commando sound, but he has a 340. Lots of 4 speed action after the exhaust swap.
    High RPM shifts at the 31:45 mark.
     
    Last edited: Mar 14, 2019
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    • 67Dart273

      67Dart273 Well-Known Member

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      Just single turbo it, simple LOL
       
    • rustycowll69

      rustycowll69 Well-Known Member

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      kinda reminded me of a chase scene, like in the movie "Bullit"
       
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      • MRGTX

        MRGTX Well-Known Member

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        Is it common knowledge that the "273 commando sound" is something special?
         
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        • 66fs

          66fs Well-Known Member

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          Yes, If you ever heard one. I still have people come up and tell me they remember that sound, even 50 years later.
           
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          • dibbons

            dibbons Well-Known Member

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            I enjoyed the video. The exhaust note at idle sounds pretty much the same to me. And how is the owner duplicating the factory 273 Commando sound by omitting the front muffler?
             
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            • AJ/FormS

              AJ/FormS 68 B'cuda fb, Form S clone ... 367/A833/3.55s FABO Gold Member

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              I got no love for it
               
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              • toolmanmike

                toolmanmike FABO Staff Staff Member FABO Gold Member

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                The first hp 273's either had no muffler or a straight through muffler. Apparently the combination was too loud and they used a low restriction Hemi style muffler. It had a distinctive sound because it was a single system. The original system from what I have read was a scavenging designed crossover pipe with a 2 1/2" intermediate pipe into a low restriction Hemi style muffler and a 2 1/4" tail pipe into a bright tipped resonator. I have heard some of the early resonators weren't chrome but just painted. I think some NOS pieces have been found. Accurate LTD makes a nice replacement system for these cars.
                 
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                • 69FBCuda

                  69FBCuda Life in the Fast Lane

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                  What an Idiot, a 340 that sounds like a 2 7 3 in a fish, He must be a trust fund baby! He should be worrying about the carb and hard starting along with the massive smoke. I give this idiot an X
                   
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                  • Murray

                    Murray FABO Gold Member FABO Gold Member

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                    Sounds good for a single exhaust, but you can't beat a dual exhaust.
                     
                  • 66fs

                    66fs Well-Known Member

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                    The early systems had a 2 1/2 straight through muffler, followed by the 2 1/4 straight thru resonator. It is a nice alternative to duals if you lack space or want to simplify your system.
                     
                  • AJ/FormS

                    AJ/FormS 68 B'cuda fb, Form S clone ... 367/A833/3.55s FABO Gold Member

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                    You can hear exactly when it runs out of capacity and starts sounding like a jet engine pushing thru a straw........ but
                    the idle ain't half bad,I guess;then again that's all cam and cubes.
                     
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                    • toolmanmike

                      toolmanmike FABO Staff Staff Member FABO Gold Member

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                      Here's a little info on that straight through muffler. Commando Exhaust
                       
                    • toolmanmike

                      toolmanmike FABO Staff Staff Member FABO Gold Member

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                    • Cuda Al

                      Cuda Al Well-Known Member

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                      I didn't see the point to what he was doing, it is common knowledge that every bend, kink, muffler has an impact on the sound along with the engine details. A 340 will not sound like a 273 with the same system, not to install mufflers when you are trying for sound? He would have been better off leaving the dual exhaust and mufflers and installing two resonators.


                      Alan
                       
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                      • dibbons

                        dibbons Well-Known Member

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                        Right, he is a little delusional (a lot like me) but thanks to that dreamy attitude we have a video to watch and discuss.
                         
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                        • 66fs

                          66fs Well-Known Member

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                          Mike, Where does the link go? My computer cancelled it. I have original 66 and 67 Commando Y pipes, NOS mufflers and a resonator. I know what they are. I also know the straight thru was changed to a real muffler in 66? I have that one also. I believe the 67 muffler was part of the intermediate pipe. Accurate made the exhaust on my 66 Barracuda but they made me a straight thru front muffler. It is not the same as Original but it works. Thanks
                           
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