Cooling - Water Pumps - Aluminum Water Pump

From GM Performance - Put your engine on a diet with this light weight aluminum water pump. This heavy duty pump as a reinforced snout, a large 1.50 inch diameter bearing, a strong 3/4 inch diameter shaft, and a cast iron rotor. This casting has the short style mounting legs used on pre-1982 Corvettes, and a large hub with dual bolt patterns.

From GM Performance - Put your big block on a diet with this lightweight aluminum water pump. It has a reinforced snout and a large diameter hub with dual-bolt patterns for early and late model pulleys. This casting has short mounting legs and is used for early design V-belt drive rotation.