Where is the water temperature sending unit on a 1973 390 engine?

On a 1973 390 engine, the water temperature sending unit is typically located near the top of the engine, usually on the intake manifold or cylinder head. It is often found in the vicinity of the thermostat housing, where it can accurately measure the coolant temperature. If you're having trouble locating it, refer to the engine's service manual for precise details and diagrams.