After their excellent result in the previous year's race, Alfa Romeo's Autodelta works team was favourites for a class-win. However, the team withdrew after the death of their lead-driver and 1968 race-winner, Lucien Bianchi, at the March test weekend trialing the new Tipo 33/3– the third driver death for the team in testing after Jean Rolland and Leo Cella in 1968. Instead it fell to the Belgian customer team VDS to run two of the older model Tipo 33/2, one with a 2.5-litre V8 engine.