14" fan + 360 = overheat

Take your radiator to a radiator shop and ask them if they can recore to a 3 core. Thats what I did with mine. Copper cools better than aluminum for a given area. My 360 stays cool idling around in traffic with a stock 4 blade fan no shroud (although I wish I had a shroud, I would put my 5 or 7 blade fan on with a viscous fan clutch.) Also cheaper to get the factory radiator recored.