Gas Engines:
* 240 cubic inch (3.9L) I6: This was the base engine, known for its reliability and durability.
* 292 cubic inch (4.8L) I6: A more powerful option than the 240, offering better performance.
* 352 cubic inch (5.7L) V8: This engine offered more power and torque than the I6 options.
* 391 cubic inch (6.4L) V8: This was the largest gas engine option, providing the most power and torque.
Diesel Engines:
* 271 cubic inch (4.4L) I6: This was the only diesel engine option available for the F600 in 1966.
Important Note: The exact engine installed in a specific 1966 F600 will depend on the truck's configuration and the original factory specifications.
To determine the exact engine in your truck, you can:
* Check the VIN (Vehicle Identification Number): The VIN can be used to look up the original specifications of your truck.
* Look at the engine itself: The engine block often has markings that indicate its size and model.
* Check the owner's manual: If you still have the original owner's manual, it should list the engine size.