The Group 4 GT category would be a battle between Ferrari and Porsche. NART had three of the five 365 GTB/4 “Daytona” entries alongside Charles Pozzi, the French importer who had won the previous year's GT prize (using Raymond Touroul's entry-card). With Porsche's refocus on production racing, they had manufactured the requisite 1000 copies of the Carrera RS cars to get homologation in Group 3. The Group 4 RSR version was very popular with privateers and no less than 13 arrived for the race. Cars included the now-regular team-entries from Kremer and Gelo (West Germany), ASA-Cachia and Claude Buchet (France), Porsche Club Romand and Claude Haldi (Switzerland), Ecurie Francorchamps of Belgium and the Spanish Escuderia Montjuïch. Henri Greder again had his Corvette, now starting to show its age, and the Wicky team also entered a De Tomaso Pantera.