The 1940 flathead engine is an iconic piece of automotive history, particularly revered by hot rod enthusiasts and vintage car collectors. Known for its simplicity, reliability, and smooth performance, the flathead V8 was a hallmark of Ford engineering during the early 20th century. Design: The flathead engine gets its name from its flat cylinder head design, with valves located beside the cylinders, rather than overhead. This compact layout simplified manufacturing and maintenance. Displacement