Ye went fastest half an hour into the first 90-minute session with a 1m31.347s aboard the customer AF Corse-run 499P Le Mans Hypercar to push the best of the works Ferraris with Anthony Fuoco at the wheel down to second position.
Fuoco ended up on 1m31.503s, which gave him a margin of nearly half a second over the first non-Ferrari, the Peugeot 2024 LMH driven by Mikkel Jensen that finished on 1m31.964s.
Lamborghini took fourth place with Mirko Bortolotti aboard the solo Iron Lynx Lamborghini SC63 LMDh.
The Italian's 1m32.015s briefly put him at the top of the times during the opening minutes of the first practice period.
The second factory Ferrari 499P took fifth place on a 1m32.065s from Antonio Giovinazzi.
A late improvement from Julien Andlauer propelled the Proton Competition team's customer Porsche 963 LMDh into sixth position ahead of the two factory cars.
The Frenchman's 1m32.253s gave him a margin of just eight thousandths over Matt Campbell's 1m32.261s in the first of the Penske Porsche Motorsport entries.
Kevin Estre was less than two tenths behind in eighth in the second PPM 963 with a best lap of 1m32.426s.
The pair of Toyota GR010 HYBRID LMHs ended up ninth and 10th in the times, a 1m32.505s from Nyck de Vries giving him a margin of two-tenths over Sebastien Buemi's 1m32.739s in the sister car.
Source: Autosport