Fiat Chrysler already told us just about everything we need to know about the 2018 Dodge Challenger SRT Demon, but the automaker knows Mopar buffs are always happy to know more about new vehicles, so put together a small fact sheet with some fun info and a complete rundown of the engine’s specifications.
We’ll start off with some of the fun facts:
- Dodge says the Demon’s 6.2-liter V8 will ingest 73 cubic feet of air during a quarter-mile run, which is equivalent to the lung capacity of 816 humans.
- The beefed up cooling system can reject up to 258 kW worth of heat, which could boil quart of water from room temperature in 1.2 seconds.
- The fuel-injectors can flow at up to 1.36 gallons per minute, which is impressive if you consider that a typical shower head flows at a rate of 2 gallons per minute.
- With each engine stroke, the piston and connecting rod is enacted with 11 tons of force (5 times the weight of the car), which happens more than 50 times per-second if the engine is revving at 6,300 RPM.
- Thanks to the TransBrake and Torque Reserve systems, the Demon generates a total launch torque of 534 lb-ft
The 808 horsepower 6.2-liter engine is 62 percent new when compared with the 707 horsepower Hellcat V8, with a new engine block, crankshaft, pistons, connecting rods and supercharger. FCA has provided plenty of info on the engine and other parts of the drivetrain, so we’ve simply embedded the stats as provided by FCA:
- 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
- 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
- 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
- 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