340 Water Pump questions, anyone using Flow Kooler?

the flow-kooler is just a 6 blade with a disc on it to improve flow. You can do the same to your new pump. A way to maximize the standard pump is to press the "impeller" on further untill its just 0.005to0.010" from the pump housing. Be careful not to press the pulley mount on further as this will cause belt alignment problems. We did this with our oval track cars.