1996 Chevrolet K3500 Engine: 5.7L V8; Reverse Rotation; Standard Duty Thermal Fan Clutch; w/o A/C;. 1997 Chevrolet K3500 Engine: 5.7L V8; Reverse Rotation; Standard Duty Thermal Fan Clutch; w/o A/C;. 1998 Chevrolet K3500 Engine: 5.7L V8; Reverse Rotation; Standard Duty Thermal Fan Clutch; w/o A/C;.