* On the side of the block, near the distributor: This is the most common location. Look on the passenger side (right side as you sit in the car) of the engine block, near where the distributor is mounted. The numbers may be cast into the block itself or on a machined surface.
* On the top of the block, near the front: Less common, but possible, especially on some smaller engines. Look near the front of the engine block, on the top surface.
Important Considerations:
* Cleanliness: The casting numbers might be covered in grime, oil, or rust. You'll likely need to clean the area to see them clearly. A wire brush, degreaser, and a bit of elbow grease are often necessary.
* Multiple Numbers: You might find more than one number. The casting number is usually a series of letters and numbers. There might also be other markings indicating the date of manufacture or other details.
* Photos: Searching online for images of engine blocks for your specific Mustang year and engine (e.g., "1967 Mustang 289 engine block casting number") can be extremely helpful in pinpointing the location.
If you're having trouble locating the numbers, providing the year and engine size of your Mustang will help narrow down the search.
