Hellcat head comparison

Discussion in 'SRT Hellcat General Discussions' started by Catscratch Fever, Dec 18, 2015.

  1. Catscratch Fever

    Catscratch Fever Silver Member

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    Does anyone know about the Hellcat heads? Are they aluminum?
     
  2. FreightTrain

    FreightTrain Comfortably Numb

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    i believe T6 aluminum
     
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  3. Catscratch Fever

    Catscratch Fever Silver Member

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    Thanks, by the way how is that shifter knob working out? :)
     
  4. FreightTrain

    FreightTrain Comfortably Numb

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    hellcat head on the right dodge-370ci-v-8-supercharged-hellcat-hemi-eninge-head-apache-392-comparison.jpg
     
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  5. Catscratch Fever

    Catscratch Fever Silver Member

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    awesome
     
  6. FreightTrain

    FreightTrain Comfortably Numb

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    its very nice... i keep it polished ;)
     
  7. Catscratch Fever

    Catscratch Fever Silver Member

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    I know you take care of it
     
  8. Catscratch Fever

    Catscratch Fever Silver Member

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    Any other pictures of the Hellcat engine or parts?
     
  9. FreightTrain

    FreightTrain Comfortably Numb

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    there are several good videos floating around of the blower apart and such
     
  10. Cerino2000

    Cerino2000 Gold Member

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    Good gosh look at the size of those valves!!! Whats he head on the left?
     
  11. rwhite692

    rwhite692 Silver Member

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    We Take A Hard Look At Dodge's Paradigm-Shifting 707hp Hellcat Hemi

    "Compared to the 392 Apache head, the Hellcat head looks very similar. Nevertheless, the Hellcat heads are cast at a specialty low-volume foundry using Hellcat-specific tooling. The Apache is a 319 alloy while the Hellcat is a premium heat-treated 356-T6 alloy, giving it higher thermal conductivity and improved elongation (one of the measures of an alloy's strength). Of note are the differences in the valves. Hellcat's are the same size as Apache, but are materially different, with the intake being hollow-stemmed and the exhaust being sodium filled."
     
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  12. Hemi Rocket

    Hemi Rocket Gold Member

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    The picture Freight Train posted of the Hemi heads... the one on the left is the Appache 392 head... the Hellcat head on the right is made of T356 Aluminum which is a lot stronger alloy and has better thermal heat transfer properties. Note the extra webbing on the left side of the head in the push rod area which strengthens the head further
     
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  13. Hemi Rocket

    Hemi Rocket Gold Member

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    Oh... Rwhite responded first... watching TV while reading posts... guess I don't multi task very fast!
     
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