1968 Dodge W100 Pickup Engine: 3.7L L6; Standard Rotation; Standard Duty Thermal Fan Clutch;. 1968 Dodge W100 Pickup Engine: 5.2L V8; Standard Rotation; Standard Duty Thermal Fan Clutch;. 1969 Dodge W100 Pickup Engine: 3.7L L6; Standard Rotation; Standard Duty Thermal Fan Clutch;.