Seeking more horsepower and speed, Mopar engineers applied Chrysler's hemispherical cylinder-head technology, developed in the 1950s, to the Wedge's 426-cubic-inch big block, creating a 426 Hemi ...

Perhaps the best thing about crate engines is the variety offered for sale by America's big ... HEMI cylinder heads are included in the crate engine build. In addition to the aluminum engine block ...