The Moroso single-groove cast aluminum crankshaft pulley is specified for Chevrolet big block 396–454 engines with a short pump and supports single-belt accessory drives on those larger-displacement front-drive layouts. It provides the groove spacing suited to short-pump big block arrangements and is intended for use when maintaining or restoring belt routing on compatible 396–454 short-pump applications.
Moroso Chevrolet Big Block 396-454 (w/Short Pump) Crankshaft Pulley - Single Groove - Cast Aluminum