Has a FIBA World Cup game ever ended 83-67?
It has. 83-67 has been a FIBA World Cup final 2 times in 2,041 games. The first was Brazil beat Poland on May 29, 1967; the latest was France beat Finland on September 16, 2018.
That makes 83-67 the 222nd most common final score out of 1,178 that have ever occurred in FIBA World Cup. One point away, 84-67 has happened 2 times and 83-68 has happened 1 times. At one point the score disappeared for 52 years, between 1967 and 2019.