2018 Dodge Challenger SRT Demon

Dodge Challenger SRT Demon: 840 factory horsepower

4y ago
30K

The 6.2-liter supercharged V8 delivers 840 hp and 770 lb-ft, making the Demon the most powerful muscle car ever. It also has the highest horsepower from a V8 production car.

It’s the world’s fastest production car in the quarter-mile with an NHRA-certified ET of 9.65 at 140 mph.

The Demon’s powerplant has the same basic architecture as the Hemi Hellcat, but it gets a larger supercharger (2.4 to 2.7 liters), more boost (11.6 to 14.5 psi), two dual-stage fuel pumps and a bigger hood scoop. The valvetrain, connecting rods and pistons have all been strengthened, and the lubrication system has been improved to keep everything slick at high speeds.

The SRT Power Chiller, “a production car first,” diverts air-conditioning refrigerant to a chiller mounted by the coolant pump. Coolant flows from the low-temp radiator in front to the chiller unit, then to the heat exchangers in the supercharger. The After-Run Chiller keeps the fan running and coolant circulating to minimize heat-soak effects. Those temps can be tracked on the touchscreen, so you’ll know when to safely take another run.

The Demon comes in 200 pounds lighter than the Hellcat on which it was built, though 113 of that is ditched with the front passenger seat, rear seat, seatbelts and floor mats. Removing the speakers saves 24 pounds; trunk deck cover trim, carpeting and spare tire account for 20. Hollow sway bars save 19 pounds; insulators, foam and body deadeners save 18.

[autoweek]

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