SB Chevy Aluminum Water Pump & Pulley Kit - Satin/Black High grade aluminum water pump, this pump will flow up to 40% more coolant than stock pumps, it will dissipate heat better than the regular oem cast iron pumps, also lighter. This pump features high quality roller bearings, custom machined impeller for maximum water flow and reduced cavitation at high RPM's. This pump will clear cam belt drives and most blower drives. Application: Will work on 1958-95 SB Chevy 283-400 V8 Blocks with "Long" Pump set up.Type: LONG (7-1/4 from block to flange). Pulley Flange: Dual Bolt Pattern. Bolt kit & Gaskets to mount to block. Note: Will NOT Fit Balancers with Rivets.