Definitions for "1977 World Sportscar Championship season"
The 1977 World Sportscar Championship season was the 25th FIA World Championship for Makes. It was a series running under the Group 6, Group 5, GT, and IMSA GTX and GTO formulas. Group 6 ran their own separate races from the other classes, making for two schedules and thus two championships, with the exception of all classes running the 24 Hours of Le Mans.