1970 Chevrolet G30 Van Engine: 4.1L L6; Standard Rotation|Non-Thermal Fan Clutch|w/o AC;. 1971 Chevrolet G30 Van Engine: 4.1L L6; Standard Rotation|Non-Thermal Fan Clutch|w/o AC;. 1972 Chevrolet G30 Van Engine: 4.1L L6; Standard Rotation|Non-Thermal Fan Clutch|w/o AC;.
