De Ferran Motorsports' Simon Pagenaud beat Highcroft rival David Brabham to pole position as the American Le Mans Series resumed at Lime Rock.
The two LMP1 Acuras had a frenetic battle for pole around the short track, with Brabham looking uncatchable early on before Pagenaud produced a 46.971-second lap that gave him first place by nearly four tenths of a second. Despite Brabham's best efforts, fading tires and increasing drizzle meant the Highcroft driver could not get any closer.
Adrian Fernandez completed another Acura one-two-three as he took LMP2 pole for his eponymous team, a few tenths ahead of the Dyson Lola-Mazdas.
The Corsa Ginetta-Zytek will start sixth for its first race in full hybrid configuration.
Jaime Melo put Risi Ferrari on top in GT2 by just 0.064sec over Flying Lizard Porsche's Patrick Long. The latter repeatedly closed in on Melo's early provisional pole lap, then edged ahead, only for Melo to respond with a 54.665s to reclaim the class top spot.