In 2005 the Hemi was introduced in passenger cars, still displacing 5.7 liters. Power was rated at 345 horsepower back then, and the current 5.7 Hemi produces as much as 375 horsepower. We got our
Performance Specs. The 2020 Challenger has five different available engines to choose from. Supercharged performance engines are tied to the Hellcat trims and the 392 HEMI is only available with the R/T Scat Pack package. The 5.7-liter HEMI V8 and the 3.6L V6 are the base engine options.The R/T model comes with the 5.7-liter Hemi V8 370 horsepower. Scat Pack models come with the 6.4-liter Hemi, making a stout 485 horsepower. Finally, the 6.2-liter supercharged, intercooled, and SR3z1F.