All Demon “mystery numbers” revealed by Patrick Rall on

During the slow rollout process of the 2018 Dodge Challenger SRT Demon, we saw all sorts of numbers in the various images with the promise that every one meant something. With the unveiling of the Demon on the night of April 11, we learned all about these mysterious math.

We have organized all of the numbers from the 12-week long rollout process of the 2018 Dodge Demon, including the obvious clues and some not-so-obvious clues – some of which really weren’t meant to be clues at all.

#[email protected]

First up, the muscle car mystery math began with our first teaser image of the 2018 Dodge Challenger SRT Demon, which showed the car from the rear with a license plate reading #[email protected] As we have mentioned on multiple occasions, the Demon is the first ever production road car to lift the wheels off of the ground on a hard launch and when this happens, there is 2,576lbs of weight transfer being applied to the rear wheels – allowing the car to pull the front wheels up and carrying them 35 inches.

757 and 1121

When we got our first look at the Demon Crate, one of the images showed the customized serial plate which comes on every one of the high performance boxes. On this serial plate were the numbers 757 and 1121 – both of which led to a ton of speculation about these being the power numbers in different performance models. 757 appeared in a handful of other images along the way as well, leading many to believe that at least one of the power numbers would be 757.

In reality, 757 was the initial power goal for the Demon team. When the Hellcat Challenger was first introduced, we were promised that it would deliver at least 600hp, but when it met production, it actually offered 707hp. With the Demon, the team planned for it to offer at least 757 horsepower – which was comfortably exceeded in both of the red key driving modes (91 octane = 808hp, 100 octane = 840hp).

As for 1121, the Dodge Challenger SRT Demon officially set the production car quarter mile record on November 21st, 2016 – 11-21.

[email protected]

When the 2018 Dodge Challenger SRT Demon launches, it creates more Gs than any production road car ever with its stock tires – reaching 1.8Gs. 1.8Gs translates to roughly 57.5 feet per second squared in a half a second and when it hits those peak G forces, the car is going around 13.5 miles per hour. So, just a half second (0.500) after launch, the Demon has reached 13.5 miles per hour and 57.5 feet per second squared – or the record-setting 1.8Gs.

3.9+221 = 405

The 2018 Dodge Challenger SRT Demon is the first production road car to feature a Torque Reserve system, which is essentially an elaborate 2-step system that allows the driver to build boost prior to launching. When you launch a Hellcat car without the Torque Reserve system, you are launching with no boost and less than 200lb-ft of torque. Torque Reserve allows the Demon to get up to 3.9psi of supercharger boost, increasing the launch torque levels by 221lb-ft – up to 405lb-ft.

So, 3.9 pounds of boost leads to an increase (+221) for a total of 405 with the Demon’s Torque Reserve system.

8.3+317=534

In addition to the Torque Reserve system, the 2018 Challenger Demon features a TransBrake which allows the driver to bring RPM and boost levels even higher than “only” using the Torque Reserve system. When using the TransBrake with the Torque Reserve system, boost levels on launch climb to 8.3psi and the torque level climbs by 317lb-ft to a total launch force of 534lb-ft torque.

In addition to the extra horsepower, the stronger drivetrain components with steeper rear gears, the sticky drag radial tires and the weight reduction efforts, the combination of the TransBrake and the Torque Reserve system play a big role in the incredible 0-60 and quarter mile times.

The 815hp Hint on the Demon Tires

Early on in the teasing process, Dodge showed off the sidewall of the new Demon-branded drag radial tires and a close-up of the package-specific wheels. On these wheels, there is a little Demon tail which points to the beginning of the tire size. However, instead of saying 315, which is the proper tire size, it says 815. The internet came to life, sure that this meant that the Demon would have 815 horsepower.

It turns out that this wasn’t a hint – it was a mistake. When the image was first created, the Demon tail arrow pointed to a white chalk line on the tire sidewall, but someone in the legal chain didn’t like that, so the white line was painted black for the image posted on IfYouKnowYouKnow dot Com. When that white line was painted black, it turned the 3 in 315 into an 8 – and a rumor was born.

The Durango SRT Dyno Screen

When the Dodge Durango SRT debuted at the 2017 Chicago Auto Show, one of the images offered by FCA in the media gallery showed the dyno screen of the newest UConnect infotainment system. On this dyno chart, it appears to show a bit more than 800 horsepower as the peak power level and since this graph was shown in the 485hp Durango SRT, it was immediately assumed that this had to be another Demon hint.

It was actually a complete coincidence in an image created to showcase the dyno screen on all 2018 Dodge vehicles with this new UConnect system. The team took a shot of the dyno screen with the full scale on the left side, then they added a properly-shaped power curve. It just so happened that the curve line topped out in the general range of power offered by the Demon in red key 91 octane mode. However, it wasn’t a hint – it was just a pleasant coincidence.

Patrick Rall was raised a Mopar boy, spending years racing a Dodge Mirada while working his way through college. After spending a few years post-college in the tax accounting field, Patrick made the jump to the world of journalism and his work has been published in magazines and websites around the world.