The 2018 Dodge Challenger SRT Demon Advance Torque System; How Powerful Is This Muscle Car?

Dodge’s Demon did not just add horsepower, it added an entire system designed to store torque before the light turns green and release it all at once. The result is a car that can pull 1.8 g’s at launch and run a 9.65-second quarter-mile in stock form. Here is how the Torque Reserve and TransBrake actually work together to make that happen.

The 2018 Dodge Challenger SRT Demon is set to unveil its release on the coming New York International Auto Show and as the day passes by, lots of tidbits dropping on the Internet about this two-door muscle car. The most interesting here is the rumors circulating on its incredible performance and speed, which leaves everyone in question, how powerful this supercar is?

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By the time Dodge finally lifted the curtain, the rumors had actually undersold it. Internet leaks guessed at big horsepower numbers, but almost none of them captured the strangest part of the car’s engineering: a system built specifically to store torque before the green light even comes on, then dump all of it into the driveline in a single instant. That is not a normal muscle car trick, it is drag-strip engineering borrowed from cars that cost ten times as much. So what exactly happens in the half-second between staged and launched?

Storing Power Before the Launch

The system in question is Dodge’s Torque Reserve, paired with a launch-assist TransBrake that lets the driver build engine rpm against a locked transmission before release. Together they generate 317 lb-ft of additional torque on top of what the engine is already making, for a combined 534 lb-ft of torque at the exact moment of launch, translating to 11,164 lb-ft of torque at the ring gear and a launch aggressive enough to pull 1.8 g’s off the line.

The Numbers Behind the Hype

All of that hardware sits behind an engine now rated at 840 horsepower and 770 lb-ft of torque on high-octane fuel, enough to run a 9.65-second quarter-mile and hit 60 mph in 2.3 seconds. The car backs that up with the largest functional hood scoop ever fitted to a production vehicle, at 45.2 square inches, plus a first-of-its-kind Power Chiller system that uses the air conditioning refrigerant loop to cool the intake air, and an After-Run Chiller that keeps working even after the engine shuts off.

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