1978-1979 GMC Caballero Engine: 3.3L V6; Standard Rotation|Standard Duty Thermal Fan Clutch|w/o AC;. 1978-1979 GMC Caballero Engine: 3.8L V6; Standard Rotation|Standard Duty Thermal Fan Clutch;. 1978-1979 GMC Caballero Engine: 5.7L V8; Standard Rotation|Standard Duty Thermal Fan Clutch|w/o AC;.
