1951 Chrysler Sales Brochure, "The Beautiful Chrysler"

The big news from Chrysler for 1951 was the introduction of its new "FirePower" hemispherical combustion chamber V-8 engine. The dome-shaped cylinder heads allowed for more complete, efficient combustion. When Chrysler introduced its next generation of the design for 1964, it dropped the FirePower name in favor of "Hemi." Hemi engines became a Chrysler trademark.