Moroso Double Groove Crankshaft Pulley - SB Chevrolet and 90 Degree V6 Chevys - Double Groove - 1969-Later (With Long Water Pump) - 50% Reduction - 4.04" O.D. H77403FS Fits into either a 3/8"

Fits into either a 3/8" NPT or 1/8" NPT port

18 oz Capacity

Steel double adjusters increase adjustment capability of control arms

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1965-1972 Chevrolet Chevelle

Moroso Double Groove Crankshaft Pulley - SB Chevrolet and 90 Degree V6 Chevys - Double Groove - 1969-Later (With Long Water Pump) - 50% Reduction - 4.04" O.D. H77403FS Fits into either a 3/8"Precision machined from high grade, lightweight aluminum castings Extra deep belt grooves provide added belt retention during rapid changes in engine RPM Small pulley diameter slows fan, water pump, and alternator speed to reduce horsepower robbing drag High RPM water pump operation is improved, reducing impeller speed below cavitation threshold Use 36 x 17 32" wide belt Moroso Performance Products is one of the worlds most respected suppliers of