Fuoco carried on where fellow works Ferrari driver Yifei Ye left off in first practice aboard the #83 customer AF Corse-run example, setting a lap of 1m30.957s with over an hour remaining in the session that could not be surpassed.
The effort put him 0.342 seconds clear of the championship-leading #6 Penske Porsche Motorsport 963 LMDh in which Kevin Estre had previously clocked the benchmark time.
A late flyer from Robert Shwartzman in the #83 Ferrari he shared with Ye and Robert Kubica vaulted him into third spot, and he ended up 0.374s adrift of Fuoco following a further improvement that didn’t improve his position.
Brendon Hartley in the #8 Toyota GR010 HYBRID LMH was the only other driver to lap within a second of the outright pace, placing fourth with a best time 0.772s shy. Team-mate Mike Conway was a further eight places and 0.984s behind in the #8 Toyota.
Callum Ilott was fifth-quickest in the best of the privateer Jota Porsche 963s, heading the leading effort from Peugeot’s heavily-revised 9X8 LMH.
Stoffel Vandoorne was 1.543s down on Fuoco in sixth aboard the #94 Peugeot, just 0.004s ahead of Mick Schumacher in the #36 Alpine A424 LMDh and the #93 Peugeot of Jean-Eric Vergne.
James Calado put the second of the factory Ferraris into ninth in the final five minutes of the session, but Rene Rast left it even later to complete the top 10 as the chequered flag was waved in the #20 BMW M Hybrid V8 LMDh.
Mirko Bortolotti set the fastest time in the sole Lamborghini SC63 LMDh that was 1.906s off the pace in 15th, ahead of the Chip Ganassi Racing-run Cadillac V-Series.R LMDh in which Alex Lynn managed a 1m32.879s.
Source: Autosport