C8AZ-8509-A All 390 engines without power accessories. No power steering, no air conditioning, and with a single belt alternator.
Single sheave pulley, 7-1/4 inches in diameter. When measured from the front of the water pump hub (or inside of the pulley) to the center line of the belt sheave the measurement is 2-1/8 inches.
Ford casting number C8AE-8A528-B.
After 2-17-1969.