June 2, 2017 , Auburn Hills, Mich. - Details about the supercharged 6.2-liter HEMI® V-8 and powertrain in the 2018 Dodge Challenger SRT Demon:

Displacement: Supercharged 6.2-liter V-8

Construction: Deep-skirt cast iron block; aluminum alloy heads with hemispherical combustion chamber

Output:
  • 840 bhp (626 kW) @ 6,300 rpm; 770 lb.-ft (1,044 N•m) @ 4,500 rpm with Direct Connection Controller and unleaded 100 octane minimum fuel
  • 808 bhp (603 kW) @ 6,300 rpm; 717 lb.-ft (972 N•m) @ 4,500 rpm with Premium 91 octane fuel

Production site: Saltillo Engine Plant, Ramos Arizpe, Mexico
  • 62 percent new content compared with Hellcat V-8: engine block; crankshaft; pistons; connecting rods; supercharger
  • Cylinder heads machined on dedicated Demon/Hellcat CNC machines
  • Engine block is deck plate honed to minimize bore distortion
  • Every Demon and Hellcat engine is dyno tested for 42 minutes under load up to 5,200 rpm before being shipped to assembly plant in Brampton, Ontario
 
More air: Largest functional hood scoop opening (45.2 square inches) and triple-inlet air box (903.1 cubic inches). High flow, low restriction inlet system designed to deliver cool air into the supercharger.

Air-flow rate: 1,150 cubic feet per minute

SRT Power Chiller™: Redirects air conditioning refrigerant from cabin to chiller unit; reduces charge air temperature by 18 degrees Fahrenheit
 
Supercharger:
  • Twin screw, 2.7 liters per revolution
  • Rotors 1.1 inches longer compared with Hellcat
  • Maximum boost pressure 14.5 psi compared with 11.6 psi for Hellcat
  • Dual water/air heat exchangers integrated into supercharger housing
  • Electric pump flows up to 11.9 gallons per minute
 
Engine internals:
  • Forged alloy steel crankshaft with 90.9-millimeter stroke and revised balancing
  • Induction-hardened crank bearing surfaces; individual journal optimized main bearing clearances
  • Forged high-strength alloy pistons; 30-micron increased piston to bore clearance
  • Powder forged connecting rods; upgraded shank and big end; revised ultra-high tensile fasteners
  • Flow doubled on piston cooling oil jets
  • Revised design valve springs
  • 33 percent increase in oiling for valve springs and rocker tips – lubrication and cooling
  • Single-groove collets on valve stems for improved stability
  • Fuel injector pressure increased 27 percent
  • Oil pan and windage tray optimized for high acceleration – tested up to 1.8 g
 
Transmission: TorqueFlite 8HP90 eight-speed automatic
  • Upgraded automatic transmission torque converter increases torque multiplication 18 percent
  • Torque converter stall speed increased 11 percent
  • In Drag Mode, transmission minimizes torque cut during gear changes – 400 millisecond shifts
 
Drivetrain:
  • Limited-slip differential
  • 230-millimeter ring gear in high strength alloy, heat-treated aluminum differential housing
  • 3.09 final drive ratio for maximum acceleration
  • 20-percent thicker prop shaft made of high strength, low alloy steel tube; high strength steel stub shafts
  • Upgraded halfshafts with 8-ball Cross-Glide inner and outer joints; larger diameter barshafts with 41-spline count; high alloy steel inner and outer stub shafts
  • Nitto drag radial tires achieve up to 40 percent more launch force
 
Fun facts:
  • During a quarter-mile run, the Demon V-8 ingests 173 cubic feet of air. That’s equivalent to the lung capacity of 816 humans.
  • 800 feet into a quarter-mile run, the Demon V-8 would empty all the air in the cabin of the Dodge Challenger SRT Demon – 105 cubic feet
  • Demon V-8 cooling system rejects 258 kW of heat at rated power – that would boil 1 quart of water at room temperature in 1.2 seconds. The heat rejected is equal to 250 electric toasters.
  • At rated power, high-octane fuel flows at 1.36 gallons per minute. Typical shower head flows at 2 gallons per minute
  • On each power stroke, piston and connecting rod is loaded with 11 tons of force – equivalent of 5 2018 Dodge Challenger SRT Demons. This happens more than 50 times a second @ 6,300 rpm.
  • Torque Reserve and TransBrake combined generate 317 lb.-ft. of incremental torque, for total launch torque of 534 lb.-ft.
  • The driveline sees 11,164 lb.-ft. of ring gear torque at launch. Results in a 1.8 g launch.
  • More than 1 ton (2,500 pounds) transferred from front to rear wheels at launch

Dodge//SRT
For more than 100 years, the Dodge brand has carried on the spirit of brothers John and Horace Dodge. Their influence continues today as Dodge proudly offers a complete lineup of performance vehicles that stand out in their own segments. For 2020, Dodge literally expands its high-performance Charger model lineup, adding a Widebody exterior to America’s only four-door muscle car. The 2020 Dodge Charger SRT Hellcat maintains its reign as the most powerful and fastest mass-produced sedan in the world. 
 
The 2020 Dodge lineup also features the 2020 Dodge Challenger SRT Hellcat Redeye, 2020 Dodge Challenger SRT Hellcat, the Challenger R/T Scat Pack Widebody and the 2020 Challenger R/T Scat Pack 1320. The 2020 Dodge Durango SRT, the fastest, most powerful and most capable American three-row SUV, completes the brand's performance lineup. These visceral performance models join a 2020 brand lineup that includes the Durango, Grand Caravan, Journey, Charger and Challenger.  

In June 2020, Dodge was named the "#1 Brand in Initial Quality," making it the first domestic brand ever to rank No. 1 in the J.D. Power Initial Quality Study (IQS). Dodge is part of the portfolio of brands offered by global automaker Fiat Chrysler Automobiles. For more information regarding FCA (NYSE: FCAU/ MTA: FCA), please visit www.fcagroup.com.
 
Follow Dodge, SRT and FCA news and video on:  
Company blog: http://blog.fcanorthamerica.com
Media website: http://media.fcanorthamerica.com
Dodge brand: www.dodge.com
Dodge Garage: www.dodgegarage.com
Facebook: www.facebook.com/dodge or https://www.facebook.com/FiatChrysler.NorthAmerica/
Instagram: www.instagram.com/dodgeofficial or www.instagram.com/FiatChrysler_NA
Twitter: www.twitter.com/dodge or www.twitter.com/FiatChrysler_NA
YouTube: www.youtube.com/dodge or www.youtube.com/fcanorthamerica