This pump will clear cam belt drives and most blower drives. However, this pump will fit all SB Chevy blocks up to 1985.
Specs: 5/8" Pilot, 1/2" NPT side port. Pulley Flange: Dual Bolt Pattern. Package: Water Pump, Gaskets to mount to block & Plug.
Stainless Water Pump Bolt Kit - Hex Polished. Gaskets to Mount to Block (2).
Chrome Steel Pulley - Single Groove. Pulley Bolts & Lock Washers - Hex (4).