Chrysler Hemi engine

For an overview of Hemi engines in general, see Hemispherical combustion chamber.

The Chrysler Hemi engine, known by the trademark Hemi or HEMI, is a series of high-performance American overhead valve V8 engines built by Chrysler with hemispherical combustion chambers. Three generations have been produced: the FirePower series (with displacements from 241 to 392 cu in (3.9 to 6.4 L) from 1951 until 1958; a 426 cu in (7.0 L) race and street engine from 1964 through 1971; and family of advanced Hemis (displacing between 5.7 and 6.4 L (348 and 391 cu in) since 2003.

Although Chrysler is most identified with "Hemi" as a marketing term, many other auto manufacturers have incorporated Hemispherical cylinder head designs.

During the 1970s and 1980s, Chrysler also applied the term Hemi to their Australian-made Hemi-6 Engine, and a 4-cylinder Mitsubishi 2.6 L engine installed in various North American market vehicles.

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