BBK Under Drive Pulley Kit 6 Rib Serpentine Aluminum Polished - Small Block Ford Helmet Air Hose 1980-1981 GMC P2500

1980-1981 GMC P2500

Manufactured and assembled in the USA

which may be too large for some small diameter spring/retainer combinations

1974-1987 Buick LeSabre

BBK Under Drive Pulley Kit 6 Rib Serpentine Aluminum Polished - Small Block Ford Helmet Air Hose 1980-1981 GMC P2500Install a set of BBK performance underdrive pulleys and see an average of 8 15 additional horsepower over the stock pulleys. Under drive pulleys increase engine output by reducing the draw of the engines accessories by slowing them down and reducing the HP they use. Additional and significant performance improvements can be seen by reducing the weight of the pulley versus the original pulley which is why we recommend the BBK CNC Machined billet