Machined aluminum finishDouble belt groove6-5/8 inch diameterUse with long water pumps
Spectre's Double Belt Groove Pulley was designed for '69-'85 small block Chevrolet engines with long water pumps. Constructed with a machine aluminum finish; the double belt groove pulley measures 6 5/8 inches in diameter. Identify the water pump by looking at the distance between it and the timing cover, long water pumps are about 1 inch away from the timing cover.
Brand: Spectre Performance, Model: SPE-4439, Color: Machined