Sandahl Bergman was supposed to be naked for the Dance of the Three Snakes set piece, but refused to do any nudity on the day this sequence was shot. Per R.J. Kizer, the character was originally written to be naked for the dance, but when Ms. Bergman was hired for the role one of the stipulations was no nudity. The scene was adjusted accordingly. Only Cec Verrell ("Centinela") had a contractual agreement for nudity.
The part of Sam Hell was written with Tim Thomerson in mind, but New World demurred. Daniel Stern was strongly pushed by New World, but Stern wanted certain aspects of the character changed. Finally it came down between Roddy Piper and Ed Marinaro. Kizer and Jackson selected Piper.
The movie score was recorded October 14, 1986, at Amigo Studios in North Hollywood, CA, with non-union musicians. Additional overdubs were recorded on October 15th at Record Trak in Hollywood (near the Paramount studios).