Overview Reviews Product Description Brand new machined aluminum single groove water pump pulley. This pulley fits 1969-85 small block chevy's with a long water pump. This pulley is 6.60 inch diameter with a bolt circle of 2.30 inch. Machined aluminum finish. Sold each. Product Videos Custom Field Product Reviews Write a Review Write a Review × Pirate Mfg Machined Aluminum LWP Single Groove Water Pump Pulley - Fits Chevy SBC 283-350 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *