Good Morning, I have had luck with a JEGS 15" fan Part number 259-19115. Add a spacer part number 555-51190 to stand off your water pump. Now the trick: you may have to mill down your spacer because it is 1" but I would not know what you need because of how much shaft you have protruding from your water pump.

This setup should clear your lower radiator hose attachment and your harmonic balancer unless you have the ever so rare 2 belt balancer. You will need to remove the radiator to install the fan, and then the drain cock off the radiator to put the radiator back in.

Let me know how you make out. This helped cool my 261 quite a bit, but she still runs warm because I have a Chinese knock off radiator. I will start a thread for searching for a good radiator. I'm stumped.

Joe

1947 - 3800 dually known as "Deadwrench"
Link to a few photos

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