IF your flathead has a clean block and radiator, It will sit in traffic ,sit at 50-60 mph on the motorway, tow a caravan and not over heat, yesterday I drove my 34 3w up to our clubs Christmas party 250Klm round trip, air temp 35C, 60 mph on hi way no getting hot ,no worries.
Lawrie
Truth to this statement as well. The importance of starting with a surgically clean block can not be overstated. To this day, the amount of casting sand and crud I've cleaned out of blocks is truly surprising.
The subtitle of this forum is "Long live the flathead Ford". A stove-bolt sbC is totally inconsistent with those words.