The Society of Automotive Engineers has verified the 2018 Dodge Challenger SRT Demon’s 6.2-liter supercharged V8 at 808 horsepower on pump gas and 840 horsepower on high octane race gas, but those numbers don’t tell the full story.
The Demon’s V8 only shares 38 percent of parts with the 6.2-liter supercharged Hellcat engine on which it’s based. The Demon’s engine not only boasts higher peak power and torque outputs than the Hellcat’s, but it has much more torque throughout the rev range.
In a recent video released by FCA showing the SAE power validation run for the engine, the Demon’s V8 can be seen making 600 lb-ft of torque from as low as 2,000 RPM and as much as 770 lb-ft from 4,500 RPM. The claimed 840 horsepower peak is achieved at around 6,400 rpm.
According to Allpar, Dodge nicknamed the Demon engine ‘Benny’ during its development. They also needed to test the engine in one of the engine dyno cells FCA built to test its NASCAR engines, as none of the standard dynos were robust enough to handle its output.
Watch the dyno run in the video above.