Hemi, Chrysler's "hemispherical heart." The hemispherical combustion chamber is its soul—spark plug centered, flames radiating outward, allowing for a more thorough combustion of the mixture, boosting power by 15%-20%. Since its inception in 1951, from fighter jet engines to the Dodge Challenger and Jeep Grand Cherokee, it has carved a performance totem with its roar. Great ambitions are hidden in a small hemisphere, a violent poem of mechanical aesthetics. $HEMI @Hemi #hemi