Will not work on Stock Corvette or Early Chevy trucks with Stock water pumps. Will Not fit LT1 Or LT4.
Billet Aluminum 2 Groove / Belt Water Pump Pulley (6-5/8 Diameter). Billet Aluminum 2 Groove / Belt Crank Pulley (6-5/8 Diameter). Billet Aluminum 1 Groove Alternator Pulley. Billet Aluminum Alternator Fan Blade. Billet Aluminum 1 Groove "Key Way" Power Steering Pulley.
Professional Installation is Highly Recommended (No Instruction and Wiring Diagram Included).