Chevy Big Block Pulley Kit V-Belt, Long Water Pump - Black Bright Dip Anodize Black Billet Aluminum Chevy Big Block Pulley Kit - V-belt (396, 427 and 454) Requires Long Mechanical Water Pump with Clockwise Rotation Made in the USA from 6061-T6 Billet Aluminum 1 Groove WP Pulley, 2 Groove Crank pulley and 1V Alternator Pulley