Are 5.0 mustang motor parts interchangeable with a Lincoln motor?

Not directly. While Ford's 5.0L Mustang and Lincoln engines share the same basic family (the "Modular" engine family), there are enough differences between specific years and models that parts aren't always interchangeable without modification or careful selection.

Factors affecting interchangeability include:

* Year: Even within the 5.0L designation, significant design changes occurred over the years. A 1990s 5.0L is very different from a 2010s Coyote 5.0L. Interchangeability is generally limited to parts *within* the same generation.

* Specific Engine Code: Ford uses engine codes (e.g., 5.0L Windsor, 5.0L Coyote) to identify specific engine configurations. Parts for different codes aren't always compatible.

* Vehicle Application: Even with the same engine code, parts designed for a Mustang might have slightly different dimensions or mounting points compared to a Lincoln application. This is especially true for things like intake manifolds, exhaust manifolds, and accessories.

In short, you need to be very specific about the exact year, make, model, and engine code of both the Mustang and the Lincoln engine before assuming any part interchangeability. Checking parts diagrams and specifications from reputable parts suppliers is essential.