
Ford Small-Block Engine Interchange Guide: Cooling System
Small-block cast-iron water pumps remained much the same through 1969, with a right-hand inlet for the lower radiator hose. Beginning in 1970, 302 and 351W small-block Fords received a new water pump casting (D0AZ-8501-C) with the inlet on the left-hand side of the engine. Boss 302s for 1969 were fitted with a 1969- specific high-flow water pump (C9ZZ- 8501-A). A year …