Pirate Mfg SB Chevy Short Water Pump Chrome Steel 1 Groove Pulley Kit 283 327 350 V8 Brand New Chrome Steel Pulley kit This kit will work on all Small Block Chevy Motors With a "SHORT" water pump This Water pump pulley is 7" diameter and is 2-3/4" Deep Measuring From Front To Back This crank pulley is 6-5/8" diameter and chrome bolts are also included This kit will not work on early 265-283 engines with riveted on pulleys and also Will not fit Corvette water pumps or early stock GM trucks