American Speed & Racing five piece POLISHED aluminum underdrive pulley set. MADE FROM BILLET ALUMINUM. Fits Olds engines 350-455 ci. Double groove crank pulley; 4 13/16" diameter, water pump pulley; 5 15/16" diameter, and alternator pulley (w/cover); 3 1/2" diameter, and polished aluminum alternator fan.
All pulleys have been under/over driven for street / strip applications. Pulleys have been specifically designed to be used as a set to free up horse power via 20% total undrive ratio. The water pump & crank pulleys have been underdriven to a 1.23:1 ratio allowing the water pump to spin fast enought to supply sufficient coolant flow without overheating under idle conditions.
All pulleys have been polished to mirror finish.
Price: $199.95
|
