Big Block Chrysler Pulley Kit 383, 400, 426 & 440, V-Belt Chrysler Small Block Pulley Kit - V-belt (383, 400, 426 & 440) Water Pump Pulley: 2 V-Belt Groove, 6.4" Dia, 2.9" Length Crank Pulley: 2 V-Belt Groove, 5.2" Dia, 3.2" Length and 6 bolt pattern Fits Engines 1970+ Made in the USA from 6061-T6 Billet Aluminum