I have no idea how well the water pump works. I have only drove it a few miles and it was running a little hot. I have since installed a new radiator and electric fan and the motor is being rebuilt. The impeller looks to be in great shape. How well do these water pumps work is more what I am wondering? I care nothing about matching numbers. Do the flowkooler water pumps work so much better that i should go ahead replace while I am having the engine rebuilt?
