The Y-block engine is a family of overhead valve V8 automobile engines produced by Ford Motor Company. The engine is well known and named for its deep skirting, which causes the engine block to resemble a Y. It was introduced in 1954 as a more modern replacement for the outdated side-valved Ford Flathead V8 and was used in a variety of Ford vehicles through 1964. The original Lincoln V8 was also known as a Y-Block. Lincoln introduced their engine in 1952, but it was a different design from the Ford Y-Block, and was used on large cars and Ford heavy-duty trucks.