Moroso water pump.......

long story short,....I was reading an artical about how chry waterpumps actuly quit pumping water around 4500 rpm and how to make then flow to 6000. He also talked about the ratio and those that turned over 6000 should us a differant ratio so that it didn't turn the water pump over 6000 rpm.

what? im pretty sure my water pump is pumping water then entire time my engine is running regardless of the RPM.