Among the innovations of sound editor Alan Splet, who won a special Oscar® for his work, was attaching microphones to the underside of the horse during the racing scenes to catch his actual hoof-beats and breathing.
After the scene of the ship sinking, there is a stretch of 28 minutes where no dialogue was spoken.
Author Walter Farley had reservations about his signature story being filmed and feared that the novel might not translate successfully to a new medium. Happily, the movie exceeded his expectations in remaining true to the original and finding its own artistic identity. "They did a beautiful job," he conceded.
There was outrage in some quarters when Caleb Deschanel's ravishing cinematography failed to even be nominated for an Academy Award. Deschanel, then 34, commented, "I'm disappointed. The fact that so many people told me I was sure to get the nomination has made it harder to take. On the other hand, who am I? I'm just a young punk making his name in this business..."
Cass Ole, like most horses, had his mane trimmed into what's called a bridle path. This makes it easier to fit a bridle. For the movie, Cass Ole had to wear "hair extensions" to make his mane look like a wild horse's mane. He also had white markings on his legs and forehead and the white needed to be covered with a black hair dye to transform Cass Ole into the Black Stallion.