How to install a water pump on 350 Chevrolet engine?

Drain coolant. Remove all belts on the water pump pulley. Remove fan. Slide off pulley. Remove hoses. Unbolt water pump. Replace pump using new gaskets. Reinstall fan, pulleys, belts, etc. there are 4 bolts holding the pump to the block.each side has a gasket. i usually use silicone sealer with the gaskets. put the sealant on the block where the gaskets go,(if you use sealant) then put the two top bolts through the pump, and place the gaskets on the bolts to hold them in place. bring the pump up close to the block ,and try to start the top bolts.if you succeed, then put the bottom bolts in carefully ,to make sure they go through the gasket holes. when all 4 bolts are started, tighten them evenly. before starting to replace the pump be sure to clean the surface of the block very well. after that is done you have to put all the accesories, hoses and belts back on. remember to refill the cooling system before starting the engine to check for leaks.