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back pressure

Discussion in 'The Garage' started by jacked_86chevyk10, Feb 23, 2004.

  1. jacked_86chevyk10

    jacked_86chevyk10 Registered Member

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    how much back pressure do u need- i have a sbc 350 -i want to cut my exhaust off b4 my flowmasters (bc theyre old and sounds BAD) so how much pipe do i need to leave on-
     
  2. bigyellowjimmy

    bigyellowjimmy 1/2 ton status

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    you want to run with open exhaust...no mufflers??
     
  3. dhcomp

    dhcomp 3/4 ton status Premium Member

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    If what i remember is correct, you will need more than just a certain legnth of tubing to achieve the correct backpressure. Most ppl achieve this with mufflers and/or cats.
     
  4. 4xcrazy

    4xcrazy 3/4 ton status

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    Nascar/Stock cars run mufflers?, top fuel drag cars run mufflers? don't worry about back pressure, run with out the mufflers if you want noise. Running long enough pipes out the back will quiet the tone just a bit anyways.
     
  5. Shaggy

    Shaggy 3/4 ton status

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    [ QUOTE ]
    Nascar/Stock cars run mufflers?, top fuel drag cars run mufflers? don't worry about back pressure, run with out the mufflers if you want noise. Running long enough pipes out the back will quiet the tone just a bit anyways.

    [/ QUOTE ]

    Do you crawl at 9000+ RPM all day? You need some backpressure to help make torque on the low end.
     
  6. 4xcrazy

    4xcrazy 3/4 ton status

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    Thats the job of the gears, whatever though, everybody has their own opinions i guess, finding this out with this web site, weird ones at that. I'm out. have fun.
     

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