9. Chrysler 6.2-Liter SRT Hellcat Supercharged V8
One of the meanest, scariest engines on this list is Chrysler’s crazy 6.2-liter supercharged Hemi. Chrysler produced these V8s for their Hellcat versions of the Challenger and Charger. This engine pushes the boundaries of not only Hemi design but the concept of a street-legal V8. With 707 HP and 650 lb-ft of torque on tap, the Hellcat Hemi propels any car to sublime speeds in just a couple of seconds. This is the final and most powerful version of Chrysler’s 5.7-liter Hemi which debuted in 2003.
The secret of the Hemi engine is its cylinder head, which is bigger and hemispherical; hence the name. This concept allows the engine to burn more fuel at higher rpm, delivering more power. Even though the basic 5.7 Hemi was a decent engine, Chrysler`s engineers wanted more. With the help of a larger displacement block and 2.4-liter supercharger unit, they got the monstrous 707 HP that clearly deserves the nickname, “Hellcat.” However, car fans are afraid this is the last time they’ll see crazy engines like this. The trend is downsizing and the Hellcat Hemi could be the last great American V8.