When was the hemi introduced?

Chrysler built a few hemi engines during World War 2 but none ever went into production. One developed over 3,000 h.p in a V16 configuration. The first hemi mass produced for an automobile was Introduced in the fall of 1950 as a 1951 model, the Fire Power 331 V-8 was offered as on option in the Saratoga (except for the coupe models), while it was standard in the New Yorker and Imperial.