For most of the 1950s, the Panhead engine was unchanged. There were, however, options you could choose to modify the engine. One of the most famous is engine code FLE for 61″ cams and an M61 ...

Harley-Davidson officially began in 1903 with the Model 1, which used a 24.74 cubic-inch inlet-over-exhaust single-cylinder engine. Down the line, the company engineered the Panhead, Knucklehead ...

Harley-Davidson's Big Twins have evolved over the years, from the powerful F-Head to the iconic Knucklehead, Panhead, and Shovelhead engines. Each generation of Big Twins has brought improvements ...

Harley-Davidson's Shovelhead engine bridged an important gap. The one between the full top-and-bottom Panhead engine (phased out in '66) and the Evolution engine (that sail into the sunset in '84).

Several years before, in 1936, Harley had introduced the knucklehead engine as first overhead-valve, top of the line powerplant. The moment is still considered a turning point in motorcycle ...

Just like its illustrious predecessors, the Panhead engine that powered Harley-Davidson motorcycles between 1948 and 1965 is the stuff of legends. So much so that shops across the world would stop ...

Shovelhead isn't Harley-Davidson's most powerful motorcycle engine, but it had a successful run from 1966 to 1982. Unfortunately, time more or less ended the Shovelhead engine's reign.