“Due to the shape of the hemispherical combustion chamber, it’s difficult to raise the compression ratio high enough to fully take advantage of its superior shape, irrespective of the brand on the valve cover”
“If the 2003-present Gen-III Hemi isn’t a real hemi engine, then why do we call it that? With good reason, Chrysler (now FCA) wanted to extend the “Hemi” branding to its third-generation Hemi V-8 because of the instant recognition and status it carries.”
“Due to the shape of the hemispherical combustion chamber, it’s difficult to raise the compression ratio high enough to fully take advantage of its superior shape, irrespective of the brand on the valve cover”
https://www.motortrend.com/how-to/hemi-engine-pros-cons/
This is also interesting:
“If the 2003-present Gen-III Hemi isn’t a real hemi engine, then why do we call it that? With good reason, Chrysler (now FCA) wanted to extend the “Hemi” branding to its third-generation Hemi V-8 because of the instant recognition and status it carries.”