It’s a common misconception that the Ford Modular V8 is called that because its parts are easily swappable. Nope, that’s not the case at all. While it’s true that many people love modding Mustang 4.6 engines (more on that later), the name has nothing to do with that. Instead, it’s all about production. Ford wanted to be able to build different types of engines on the same manufacturing line, and they used the term “Modular” to describe that capability. It’s yet another reason why there are so many variations on this engine in existence.