The radiator on my 1950 1/2 ton had been moved about 3 inches away from the motor, I think when someone replaced the 216 with the current 235. When I pointed it out to someone, it was suggested I buy a spaced to get the fan closer to the raidator. After buying the spacer and a new fan, I realized I could move the radiator back to its original position and achieve the 3/4" to 1" spacing. I had been having cooling troubles, so hope this helps.
Lawrence