The hemispherical shape allows for:
* Larger valves: The hemispherical shape allows for larger intake and exhaust valves, which improves airflow into and out of the cylinders. This leads to better breathing and more power.
* Better flow: The shape promotes a more efficient flow of the air-fuel mixture into the combustion chamber, leading to more complete combustion and improved power output.
While Dodge popularized the hemi engine in the public consciousness, particularly with their high-performance models, it's important to note that other manufacturers have also used hemispherical combustion chambers in their engines throughout history. However, Dodge's branding and use of the term "hemi" made it synonymous with their powerful engines.
