BBC 396-502 ci Crankshaft Pulley. Double Groove, for Long Water Pump. 6.6" Diameter. Satin Aluminum. Also available in Polished Aluminum - part #S9485BBCPOL. Available in chrome Aluminum by special order - Email or call for availability in chrome aluminum - part #S9485BBCC.
TECH. TIP:

UNSURE WHETHER YOU HAVE A SHORT OR LONG PUMP? IF YOUR ALTERNATOR IS ON THE PASSENGER SIDE OF THE ENGINE THEN IT'S A LONG WATER PUMP OTHERWISE IT IS A SHORT WATER PUMP.