Headers for the Hellcat?

Discussion in 'SRT Hellcat Performance' started by SRThellkitty, Mar 5, 2015.

  1. SRThellkitty

    SRThellkitty Silver Member

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    Perhaps I missed the thread but has anyone considered headers? Has to be some huge torque gains from say long tubes headers.
     
  2. DrBuick

    DrBuick Gold Member

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    Not on a boosted engine as much
     
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  3. 70Cuda

    70Cuda Yep, its got a HEMI

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    I would not put a header type manifold on the Hellcat. The factory exhaust is set to reduce temps under the hood. With its dual wall construction. There will be plenty of other upgrades to consider.
     
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  4. SRThellkitty

    SRThellkitty Silver Member

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    Wouldn't headers lower the threshold of boost pressure thus providing higher torque in the midrange? Thermal coating the headers would help keep underhood temps down.
     
  5. Chippy

    Chippy Silver Member

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    The headers on it look a lot better flowing than you normally see. I wouldn't expect to gain anything worth the cost or efforts.
     
  6. SRThellkitty

    SRThellkitty Silver Member

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    Most quality headers aren't really cost effective but for those who are looking to extract more power on the big end end up getting headers. Boosted LSA motors ZL1 & CTS-V's pick up 17 to 20 hp and torque respectively with headers.

    Whenever the aftermarket comes out with a HC pulley folks are going for maximum power.
     
    Last edited: Mar 5, 2015
  7. Cat-Man-Do

    Cat-Man-Do Silver Member

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    any advantage to removing cats?
     
  8. HCone

    HCone Gold Member

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    go for it and let us know the results
     
  9. Cat-Man-Do

    Cat-Man-Do Silver Member

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    Dr. Buick can probably answer that off the top of his head...
     
  10. DrBuick

    DrBuick Gold Member

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    Yea have fun with post cat 02 sensors
     
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  11. SRThellkitty

    SRThellkitty Silver Member

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    Todays modern cats flow so efficiently that removing them only frees up a few ponies. Plus going catless stinks up the car.
     
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  12. HellcatKid

    HellcatKid Silver Member

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    I think they have designed the best possible header from the factory although I'm sure there will be gear heads that try to top bolt ons such as this but you may has well throw a few hundred dollar bills in the fire bc that's exactly what it will accomplish! :D
     
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  13. DrBuick

    DrBuick Gold Member

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    JBA junk for the win
     
  14. Next Phase

    Next Phase Silver Member

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    From experience (have had numerous supercharged V8s) you will most likely lower your HP and TQ numbers. Lowering the back pressure typically lowers boost and you'll make less power. This happend on a Magnusson supercharged LS2 Vette. Added the blower...had it tuned. Then wanted more power...added headers. Lost power. Then I pullied it to gain 2/3 lbs of boost.

    I'd like to see what headers, no cats, and tune get you... 700+ rwhp???

    High flow cats won't last very long with this kind of power. Once I get bored... Headers,no cats, pulley and tune will be pretty fun...
     
    Last edited: Mar 7, 2015
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  15. VanishingPoint

    VanishingPoint Silver Member

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    I think there is 10-20 HP left somewhere in the exhaust system, whether it is through tuned headers/no cats or both. The MAF is supposed to compensat for any additional air pulled through with additional fuel, but only to a point and since this is a high compression SC car, my concern is a lean WOT condition. Short of an airfilter, I would be cautious with any additional mods that don't include some type of additional fueling/tuning.

    I think the exhuast is capable to flow pretty well for the 800 HP it makes (minus the 60-80 for the supercharger drag).
     

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