1975 Chevrolet C30 Engine: 5.7L V8; Standard Rotation; Optional Heavy Duty Thermal Fan Clutch; OE Fan Clutch Height; w/ HD Fan Clutch;. 1976 Chevrolet C30 Engine: 5.7L V8; Standard Rotation; Optional Heavy Duty Thermal Fan Clutch; OE Fan Clutch Height; w/ HD Fan Clutch;.
