Exhaust Experts

Discussion in 'SRT Hellcat Performance' started by Jungle Jim, Jun 29, 2015.

  1. Jungle Jim

    Jungle Jim Gold Member Hellcat Car Club HCC Charter Member

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    Question for you all is: what is the advantage of long tube headers versus what we already have and/or normal headers??
     
  2. bolivarshagnasty

    bolivarshagnasty Gold Member

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    Smoother flow (no quick turns) and better transition into the collector cone (4 tubes in to 1). This would equate to more hp but I would like to see a before and after dyno run with these installed. Cost and aggravation of install for 15 or 20 hp would not be worth it IMO. Any of the manufacturers have before and after info.?
     
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  3. VanishingPoint

    VanishingPoint Silver Member

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    Also if you lower the car, the headers can scrape, as well as depending on design, can add more heat underhood, and/or heat on the wrong spots, etc. Supposed to add more torque than HP, in theory depending on a lot of stuff.

    I for one doubt I will ever mess with this exhaust system.
     
  4. mowe

    mowe Gold Member

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    Hellcats are seeing great results at the track wih long tubes. My credit card is ready to take the charge.
     
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  5. VanishingPoint

    VanishingPoint Silver Member

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    Links? What HC members? Have heard nothing here other than they added no power. Cats removed may add 5-10 IIRC, and blow codes-but that was all I heard.
     
  6. 70Cuda

    70Cuda Yep, its got a HEMI

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    there are plenty of other ways to get more power than a header installation.
     
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  7. paul suloff

    paul suloff Silver Member

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    IMA Most of these modern muscle cars have good factory designed manifolds. Headers don't add that much power over stock. Unless you're pumping lots more air thru the engine it's a lot of work for 10 maybe 15HP Removing cats would give as much as headers. But that's not easy with our lock ECUs.
     
  8. KLR CAT

    KLR CAT Active Hellcat Member

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    Equal length Long tubes are good for exhaust scavenging which in a SC motor helps draw out spent exhaust gasses. Also increased flow will decrease boost, but VE is improved so motor is being more efficient lowering cylinder temps which let's you run more timing.

    In this case probably needs to be mated to a full 3" exhaust for best results. Cats will likely. Not hold up over 750 whp too long though.
     
  9. StellasHC

    StellasHC Platinum Member

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    I thought you were selling?
     
  10. Fast cat

    Fast cat BANNED Hellcat Car Club

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    Catalytic converter? Or the car's?
     
  11. StellasHC

    StellasHC Platinum Member

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    Converter...
     
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  12. KLR CAT

    KLR CAT Active Hellcat Member

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    Catalytic converts. 750whp is about the limit of flow for 3" 200 cell cats.
     
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  13. Top Cat

    Top Cat Gold Member Hellcat Car Club Gold Supporting Member Fastest Cat/Record Holder HCC Charter Member

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    We had a cat go bad this weekend, so long tubes ordered today just waiting on a delivery date from ARH
    TC
     
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  14. KLR CAT

    KLR CAT Active Hellcat Member

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    2" primaries? With our without cat pipes? You going to stock exhaust, or full 3"?
     
  15. mowe

    mowe Gold Member

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    Was gauging interest. Can't do that here though lol.
     
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