1953 Porsche 4-Cam Type 547 Engine
aka the “Fuhrmann Engine”
Look how outrageously crowned the pistons are to get as much compression as possible out of the hemispherical head. Look at the bevel-gear camshaft drive, the aerodynamically shaped cooling system cowling and fan. Dry-sump oiling, dual distributor ignition, aluminum block, all in 1953. Over-engineered and very complex, it was built for high speed operation in a serious way.