Released at SEMA 2018, you’d have to have been living under a rock not to have heard about Mopar’s 1,000-horsepower 426 Gen-III Hemi crate engine by now. Fitted with a 3.0-liter supercharger and 7.0 liters of displacement, the aptly named Hellephant definitely has the cubic-inches to make the number.

However, the only time we’ve seen one on the with any independent numbers was when AMSOIL hooked one of the first ones off the line up to their in-house engine dyno. Their tests fell short of the advertised 1,000-horsepower number, but that was attributed to the dyno’s fuel system not being able to keep up with peak demand. Fair enough, but everyone has been dying to see that 1,000 horsepower number.

Enter Demonology, a YouTube channel dedicated to… you guessed it, all-things Dodge Demon. Recently they posted a video of AJ Berge’s (owner of Hemituner Performance) Demon, outfitted with a Hellephant crate engine, rolling onto the chassis dyno to see what the engine was actually putting to the ground.

The video above is short and to the point, with a quick walk-around of the car idling smoothly, under 1,000 rpm, and only slightly hinting at a 1,000-plus horsepower engine being under the hood. Of course, getting a high-power car to idle like that seems to be pretty common these days. Once the Demon is strapped down and given some throttle, on the DynoJet, the combination of the blower whine and exhaust note combine to give the Hellephant a brutal voice.

Once the rollers stop and the graph comes up, it’s clear, the previous dyno at AMSOIL wasn’t “just excuses.” With peak power — at the rear wheels — of 944.82 horsepower at 6,459 rpm and peak torque of 877.46 lb-ft at 4,960 rpm, there is no doubt that the engine is making the claimed 1,000 horsepower. No matter what kind of drivetrain loss you factor in, this Hellephant is a beast.