1988 Chevrolet Blazer Engine: 5.7L V8; Reverse Rotation|Standard Duty Thermal Fan Clutch|w/ 3.08 or 3.42 Rear Axle Ratio|w/o AC;. 1989 Chevrolet Blazer Engine: 5.7L V8; Reverse Rotation|Standard Duty Thermal Fan Clutch|w/ 3.08 or 3.42 Rear Axle Ratio|w/o AC;.
