Well my fan is now bent up. Need to find a new fan first. Went to the local parts house and their book shows the same water pump for 194-250 from years 62-67 camaro or nova. I ordered a new one just to be safe... it sat for a long time not driven.
In my assembly manual I found measurements listed... it shows .66" minium from the fan to radiator (tanks).

Thanks, Clyde