The Flat-Four 'Hemi' You Never Knew: The Ominous Race Motor That Costs North of $250K In Porsche's long and storied history, few mechanical creations have reached the mythical status of the four-cam flat-four engine. Born in the crucible of motorsport in the early 1950s, it was a purpose-built weapon for speed, precision, and ... autoevolution.com autoevolution.com / feeds autoevolution-com / / #technology / / 25 days 25d Share