exactly the car in my avatar hasn't had a fan shroud for 10+ years, cheap aluminum flex fan and it never runs over 200 degrees on the hottest day
although when I've done core plugs in most mopar v8's there filled nearly up past the core plugs with sludge and dirt, a good washing out with a pressure washer when the engine is out is a must
when the engine isn't out I recommend a cooling system flush
