Welcome to HEMI.com, the official Chrysler LLC HEMI® Web site. Learn about the history of the early HEMI®, built by Chrysler, DeSoto, and Dodge. Get all the details on the 426 HEMI on the street and in race cars, from NASCAR stock cars at Daytona and Darlington, to NHRA Super Stock, Funny Cars, and Top Fuel dragsters. Meet the engineers who designed the original HEMI, the 426 HEMI and the new 5.7 HEMI. Learn how Don Garlits and other legendary racers adopted the 331, 354, 392, and finally the 426 HEMI as they set records year after year.