1968 Chevrolet K30 Pickup Engine: 4.1L L6; w/Power Steering; Position: Air Pump;. 1968 Chevrolet K30 Pickup Engine: 6.5L V8; w/A. C.; Position: Air Pump;. 1969 Chevrolet K30 Pickup Engine: 4.1L L6; with 31in Long Belt; with Air Pump; Position: Power Steering;.