2005 Dodge Magnum 2.7 Oil Pump Drive Gear Series of I6 and V8 engines congenital past Chrysler For an overview of Hemi engines in full general, meet Hemi engine. The Chrysler Marine Hemis were popular in wooden boats during the 1950s and 60s such as Chris-Arts and crafts Boats. The Chrysler Hemi engines , known by the trademark Hemi , are a serial of American I6 and V8 gasoline engines built past Chrysler with overhead valve hemispherical combustion chambers. Three dissimilar types of Hemi engines have been built by Chrysler for automobiles: the first (known equally the Chrysler FirePower engine) from 1951 to 1958, [ane] the second from 1964 to 1971, and the third offset in 2003. Although Chrysler is most identified with the utilise of "Hemi" as a marketing term, many other au