Jay, 190 is not that hot in reality. As the others have said I wouldn't be concerned unless it started climbing well above 200. Adding a fan shroud is a must for us in the south, it directs the air flow across the radiator and helps with keeping the engine bay cool.
You can fab one up easy enough or purchase an ABS plastic shroud for very little. I bought a shroud from H&H Classics in Bentonville Ar, for less than $80.00, bolted directly to the radiator mounts.
