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New Hellcat trivia

by David Zatz on

Hellcat-Engine-Web

Chrysler engineer Chris Cowland revealed numerous new details about the supercharged Hemi engine used in the Dodge Challenger SRT Hellcat.

  • The 5.7L Hemi makes its 410 lb-ft. peak torque at 4,800RPM; the Hellcat makes 411 lb-ft at 1,200RPM.
  • The 2.4-liter supercharger runs 14,600RPM at just over 11PSI.
  • The engine flows 30,000 liters of air per minute.
  • It takes 80 horsepower to drive the supercharger.
  • There are 21,000 lb of load on each piston; because of that, they use diamond coated piston pins.
  • Each Hellcat is dyno-tested for 42 minutes at loads up to 90% at 5,200RPM.
  • The fuel injectors flow 600cc per minute and can fill a pint glass in 7 seconds.
  • The automatic’s capacity was upgraded by 30%, using new disks.
  • The manual transmission is from the Viper, but has added internal coolers.
  • 90% of the supercharged engine’s parts are new.
  • The ECU is locked; for the aftermarket to change the tuning, they will need to use their own controllers.

Thanks, redriderbob.

David Zatz founded Allpar in 1998 (based on a site he had begun in 1993-94), after years of writing reviews for retail trades. He has been quoted by the New York Times, the Daily Telegraph, the Detroit News, and USA Today. Before making Allpar a full-time career, he was a consultant in organizational psychology. You can reach him by using our contact form (much preferred) or by calling (313) 766-2304


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