The serial number on a 1965 289 Ford engine block is typically located on the
passenger side (right side) of the block, just below the cylinder head and near the front of the engine. It might be partially obscured by the starter motor or other components. It's usually cast into the block itself, not stamped.
However, it's not always easy to find and may require some cleaning to be visible. Sometimes corrosion or paint obscures it.
