Giunti was killed during his first drive in 1971 whilst racing in the 1000 km Buenos Aires, when his Ferrari 312PB prototype ploughed into the back of the Matra 660 of Jean-Pierre Beltoise, who was pushing the car along the track after it had run out of fuel.
Giunti morreu durante a súa primeira participación en 1971 correndo nos 1000 km de Buenos Aires, cando o seu prototipo Ferrari 312PB bateu contra a parte traseira do Matra 660 de Jean-Pierre Beltoise, que estaba empuxando o coche ao longo da pista despois de que se esgotara o combustible.