I keep saying it's all about the FLOW. You can't drive the pump at crank speed, or worse, slower.
When I was in HS, I had the only MoPar. The Chevys were the worst. Almost every one of them had a 1:1 water pump drive. The simple fix was to find pulleys and speed up the pump. What I learned in the summer of 1980 I've never forgotten. Flow is the number 1 killer of cooling systems.
