Trans-Dapt V-Belt 1-Groove Water Pump Pulley - 6.3 in Diameter - Chrome - Long Water Pump - Small Block Chevy BR10064 Based on performer RPM-series with

Based on performer RPM-series with unique air gap

PCI Racer X

Holley EFI CAN Splitter

Available in strokes from 5" to 9"

Plugs also restrict water flow to the cylinder heads by reducing size of water passage holes to 5/16"

Trans-Dapt V-Belt 1-Groove Water Pump Pulley - 6.3 in Diameter - Chrome - Long Water Pump - Small Block Chevy BR10064 Based on performer RPM-series withTrans Dapt Performance Water Pump Pulley, 1 Groove, 1969 1985 Chevrolet 283 350, Long Water Pump Chrome Trans Dapt Water Pump Pulley 9604 6. 3 in. Diameter 2 in. Depth Single Groove Long Style Chrome Plated Steel Water Pump Pulley Vehicle Applications: 1969 1969 Chevrolet Biscayne 1969 1973 Chevrolet C30 Pickup 1969 1985 Chevrolet Caprice 1976 1985 Chevrolet Corvette 1969 1973 Chevrolet C10 Pickup 1969 1973 Chevrolet K20 Pickup 1969 1985 Chevrolet K20