Review on Derale Performance 16833 Output Radiator by Brad Arthur

When I first got the fans I was a bit skeptical as the fans didn't seem to be as powerful as the 3750 CFM, so like most fans I thought the performance was overdone. I installed them to cool a ~550hp 454 BBC motor that was having issues with other fans overheating. To my surprise, these fans were more than enough to keep the engine cool. I went to the sand dunes and tried to overheat the engine as before, but as soon as the fans started up, the temperature dropped below 180 degrees. I am really happy with this product and by the way it is probably the advertised 3750 CFM, you can feel the air being drawn into the engine compartment facing your car.