* 4.9L I6: A fairly common inline-six engine.
* 5.8L V8: A larger and more powerful V8.
* 7.5L V8: A very powerful, larger displacement V8, often found in heavier-duty versions.
To know *for sure* what engine is in a specific 1996 E-350 box truck, you'd need to check:
* The vehicle's VIN (Vehicle Identification Number): This number can be decoded to reveal the engine code.
* The engine bay: The engine itself will have a plate or sticker indicating the displacement and other information.
* The owner's manual (if available): This manual will list the specifications for the vehicle, including the engine.
Without access to one of these sources, it's impossible to say definitively which engine is in a particular 1996 E-350 box truck.
