The engine takes its name from the hemispherical shape of the combustion chambers; this design maximizes energy transfer to the piston and allows for the installation of large valves. The Hemi ...
The pistons, combined with the aluminum HEMI cylinder heads, provide a 10.9:1 compression ratio, while the engine's redline rpm listed at 6,400, peak horsepower occurs at 6,100 rpm with a maximum ...
Chrysler introduced the third-generation HEMI V8 engine in 2003, after the format had sat on the shelf since the early 1970s.