Marciello and Juncadella each went quickest after they have been on the wheel of the #88 ASP Mercedes-AMG GT3 of their respective periods, whereas Gounon was third quickest within the remaining 15-minute section of qualifying for the double-points spherical of the GT World Challenge Europe.
Their common time of 2m18.433s put them 4 tenths away from the Garage 59 Aston Martin Vantage GT3 shared by Nicki Thiim, Marco Sorensen and Ross Gunn, which ended up on 2m18.867s.
Best Audi R8 LMS GT3 was the manufacturing facility Attempto automotive of Mattia Drudi, Christopher Mies and Dennis Marschall, which was an additional two tenths again on 2m19.090s.
The #4 Haupt Racing Team Mercedes claimed fourth place within the palms of Maro Engel, Luca Stolz and Vincent Abril.
The two Walkenhorst-run manufacturing facility BMW M6 GT3s took fifth and sixth positions.
Sheldon van der Linde, Marco Wittmann and David Pittard ended up with a 2m19.145s common, which simply shaded the 2m19.156s from team-mates Timo Glock, Martin Tomczyk and Thomas Neubauer.
The CMR Bentley Continental GT3 pushed by claimed seventh general as the highest Silver Cup class entry with Stuart White, who was quickest in Q1, Nelson Panciatici, Jean Pierre-Alexandre and Ulysse De Pauw.
The quickest entry from Porsche, winner of the previous two editions of the Spa enduro, was the ART-run GPX Racing entry shared by Earl Bamber, Matt Campbell and Mathieu Jaminet in eighth place.
Ricardo Feller set the quickest time throughout the 4 mini-sessions with a 2m18.067s within the remaining quarter-hour aboard the #14 Emil Frey Lamborghini Huracan GT3 Evo.
That moved the Silver Cup entry he shares with Alex Fontana and Rolf Ineichen as much as ninth place two tenths up on the sister automotive pushed by Jack Aitken, Arthur Rogier and Konsta Lappalainen.
The high 20 vehicles from Thursday’s opening qualifying interval undergo to Friday night’s Super Pole session.
The manufacturing facility WRT Audi that headed each periods of free observe within the palms of Kelvin van der Linde after which Dries Vanthoor didn’t make progress to the ultimate session.
Vanthoor didn’t set a time in a Q2, which was interrupted by two crimson flags.
The works Sainteloc Audi of Markus Winkelhock, Patric Niederhauser and Christopher Haase additionally didn’t make the minimize.
The 30-minute Super Pole session is scheduled to start at 7:50pm native time on Friday.