After a problematic practice session, Penske's Mark Donohue was the fastest of the Ferraris, in fourth just ahead of the second Martini Porsche and Vaccarella in the Spanish Ferrari. The "Pink Pig" Martini 917/20 special was a strong 7th with a 3:21.1. After blowing their engine up on Thursday, the Filipinetti 512F team was able to borrow one from the Penske crew and with it they qualified 8th. Likewise, the Piper Ferrari had problems in practice. The clutch had broken on Wednesday and on Thursday the car kept jumping out of gear. At one point Chris Craft was approaching Maison Blanche at 280 km/h when it skipped into neutral. Despite that he was able to get 9th on the grid. Fastest of the 3-liter Prototypes was the Matra in 16th (3:31.9), well ahead of the Ligier in 17th (3:39.8), while the Léopard Corvette was the fastest GT in 26th (4:09.5).