StaffAllpar HomeMore NewsCarsTrucksUpcomingRepairsTest drives

New Hellcat trivia

by David Zatz on


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.

Know & Go screens
Employees created new FCA US app—first available to Ram TRX

Newest Ram Built to Serve models honor the U.S. Air Force

Former Ram chief engineer Michael J. Cairns

More Mopar Car
and Truck News

Some popular Allpar pages

Dodge Demon

2018 Wrangler JL

Staff details/contactsTerms of ServiceInformation is presented to the best of our knowledge. Plans change and sometimes mistakes are made. Decisions or purchases made based on this site's verbiage or images are done at the reader's own risk. Also see the Allpar News archives, 1997-2008 • Copyright © VerticalScope Inc. All rights reserved. • Mopar, Dodge, Jeep, Chrysler, HEMI, and certain other names are trademarks of Fiat Chrysler Automobiles.