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What size muffler should I run?

  • 4" muffler

    Votes: 5 31.3%
  • 5" muffler

    Votes: 11 68.8%

  • Total voters
    16
  • Poll closed .
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Discussion Starter #1
Should I run a 5" muffler or a 4" muffler?

598 BBC - 1070 on motor + ~500 hp fogger (single kit 10.5" class car)

Engine builder suggested 2.25 step to 2.375 headers into 4.5" merge collector or merge spike.

I can't find a 4.5" muffler out there.

Want to run a short bullet race muffler and turn-downs
 
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