Left in the pits was the Piper Ferrari and the NART Ferrari spyder with fuel system problems. The Piper car fired up and joined the back of the field, but was delayed again at 5pm when the fuel pump packed up again dropping it well down the field. It was worse for the NART car though, which came straight in at the end of the formation lap and did not get out until a half-hour had passed. It then only managed 7 laps until retired at 7.40pm with clutch failure.