The Dodge Challenger SRT Demon has been out of production since 2018, but its spirit lives on in the new Challenger SRT Super Stock. At its heart is a 6.2-liter supercharged HEMI V8 sending a colossal 807 horsepower and 707 lb-ft of torque to the rear wheels, making it the world's most powerful muscle car - that's ten more ponies than you get in the Challenger SRT Hellcat Redeye.

As well as being Dodge's most powerful muscle car, the Super Stock is also easily the most expensive, starting at a whopping $79,995. But there's now a cheaper way to experience the engine's monumental power because the Demon's legendary powerplant is now available as a Mopar crate engine to give your classic Challenger a new lease of life.

This is one of five Mopar crate engines available, including the 1,000-horsepower Hellephant 426 cubic-inch V8 and 707-horsepower Hellcrate engine. Compared to the standard Hellcrate engine, the Redeye version has a larger 2.7-liter supercharger versus 2.4 liters, an increased boost pressure of 14.5 psi instead of 11.6 psi, and a rev limit increased from 6,200 rpm to 6,500 rpm. It also gains revised valve springs that improves oiling by 33 percent. Like the Challenger SRT Super Stock, the powerplant pumps out 807 hp and 717 lb-ft of torque. Each engine is dyno tested for 42 minutes before being shipped.

The engine assembly includes a supercharger with throttle body, fuel injectors, coil packs, water pump, front sump oil pan and flexplate. Additional parts are also available to fit a manual transmission as well as a front end accessory drive kit that includes an alternator, power-steering pump, belts, pulleys and mounting hardware.

The Hellcrate Redeye is available to order from $21,807 and is intended for street and off-road vehicles built before 1976. "2021 marks the year that Dodge is distilled to a pure performance brand with 700+ horsepower models available across the entire Dodge lineup," said Tim Kuniskis, Global Head of Alfa Romeo and Head of Passenger Cars at Dodge, SRT, Chrysler and Fiat, FCA North America.

"The new 807-horsepower Hellcrate Redeye crate engine gives any pre-1976 vehicle owner another opportunity to become a member of the Dodge Brotherhood of Muscle by tapping into the Dodge//SRT power that wasn't available then, but is now."