Here's why:
* "Ford 391 V8" is not a specific model: Ford produced many variations of V8 engines over the years, and simply saying "391" doesn't tell us enough to know the exact firing order. There were likely different 391 cubic inch engines used in industrial applications, each with its own unique design.
* Firing order varies by engine: Even within a specific model line, the firing order can change from year to year or depending on specific applications.
How to find the correct firing order:
1. Identify the specific engine: You need to know the exact engine model and year of manufacture (e.g., Ford 391 V8 Industrial, 1967). This information is usually found on the engine block or on documentation that came with the engine.
2. Consult a service manual or repair manual: Once you know the specific engine, you can consult a service or repair manual for that model. These manuals will usually contain a section on engine specifications, including the firing order.
3. Search online resources: Websites like Ford forums, automotive repair websites, or engine parts websites may have specific information on your engine model.
4. Contact Ford: If you're still having trouble, you can try contacting Ford directly or a reputable Ford parts distributor.
Remember, providing accurate engine information is crucial for finding the correct firing order. Good luck!
