1992 Chevrolet C3500 Engine: 6.5L V8; Reverse Rotation|Severe Duty Thermal Fan Clutch;. 1993 Chevrolet C3500 Engine: 6.5L V8; Reverse Rotation|Severe Duty Thermal Fan Clutch;. 1994 Chevrolet C3500 Engine: 6.5L V8; Reverse Rotation|Severe Duty Thermal Fan Clutch;.