Is a 3.0 dodge motor and 3.3 interchangeable?

No, a 3.0L Dodge engine and a 3.3L Dodge engine are not interchangeable. While they might be from the same manufacturer and even share some design similarities depending on the specific application (e.g., both might be V6s), they have different internal dimensions, bore and stroke, and potentially different bolt patterns. This means they won't fit the same engine mounts, and other components like the transmission and accessories won't be compatible. Attempting to swap them would require extensive modifications, and likely wouldn't be practical.