Hello all..........been watching for some time and finally decided to join. I have a 1989 Full Size GMC Jimmy. Just put in a fresh 350 5.7 last weekend finally. I went through 4 water pumps until I finally decided to spend the $$$ and get an Edelbrock one. The reason I kept changing them was there was a loud ratcheting sound coming from the pump. Anyone else ever had these issues. I have had this Jimmy since new, and never once had to change the water pump. Thanks.