FlowKooler or Milodon water pump

68 Coronet RT said
Has anyone used either one of these water pumps on their small block ? Just wondering if one is better than the other

Probably close to the same. But check their sites for specs.

Really...those are designed to fix or anticipate a couple issues or weak points..like very high rpm cavitation, extra volume, maybe a better bearing.

Stock 8 blade impeller is more than enough when the cooling system is properly sized and holding pressure.