whats the quietest muffler

Discussion in 'High Tech Retrofits' started by hessdawg, Dec 11, 2011.

  1. 77nomad

    77nomad Veteran Member

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    This was my favorite.[​IMG]Muffler bearing.
     
  2. muscl car

    muscl car Veteran Member Lifetime Gold Member

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    seen alot of them out here in socal and it worked very well trying to quiet down the serious street brawler back then
     
  3. muscl car

    muscl car Veteran Member Lifetime Gold Member

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    the red vette in this pic was running (4) mufflers and was running a really nasty BBC that would go into the 9's and was street legal


    [​IMG]
     
  4. hessdawg

    hessdawg Veteran Member

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    So does running 2 exhaust pipes into one muffler quieter then a muffler for each pipe?? I thought it would be The opposite
     
  5. daniel76309

    daniel76309 Veteran Member Lifetime Gold Member

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    If you think about factory exhaust systems, single exhaust systems end up being quieter than dual. I don't understand exactly why that is the case, but it is. Single exhaust it more restrictive, and ends up being quieter, even with just one muffler. I think it is the same concept as 3" exhaust is louder than 2.5" exhaust, if you keep everything else the same. Less restrictive= more noise.
     
  6. hessdawg

    hessdawg Veteran Member

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    never thought about it that way but i guess you're right
     
  7. mrvedit

    mrvedit Veteran Member

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    I have 3" dual Flowmasters on my '81. My old 383 had a Comp "Thumper" cam (very low LSA - 106?) and the car was quite loud. I now have an LS2 with a high overlap cam (but high LSA - 114) and the car is no longer loud. Exhaust noise is barely noticeable on the highway and never drones like the 383 did. Both had full length headers.
    I'm wondering if cam choice might have more effect on noise than muffler choice.
     
  8. Philip

    Philip Veteran Member Lifetime Gold Member

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    The 2 engines are radically different, not just the cam specs.
     
  9. hessdawg

    hessdawg Veteran Member

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    Anybody know how much space should be between the floor and pipes??
     
  10. muscl car

    muscl car Veteran Member Lifetime Gold Member

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    i know with flowmasters they require a 1" air gap between the floor and top of the muffler
     

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