The best of the Action Express Coyotes headed the six cars on the lead lap as the Daytona 24 Hours hit two thirds distance.
Christian Fittipaldi aboard the Coyote-Chevrolet Corvette DP held a lead of just one tenth of a second over Pipo Derani in the Extreme Speed Motorsports Ligier-Honda JSP2.
Derani had overtaken Ricky Taylor in the Wayne Taylor Racing Dallara-Chevrolet Corvette DP for second shortly after the race went green a couple of minutes before the 18-hour mark following the 19th safety-car period.
Jonny Adam was fourth in the second of the Action Express cars a further two seconds behind, with Ryan Dalziel fifth in the Spirit of Daytona Coyote-Corvette.
Andy Priaulx ran sixth in the #01 Chip Ganassi Racing Riley-Ford EcoBoost DP, while the sister car with Tony Kanaan at the wheel was seven laps down in seventh position.
The Michael Shank Racing Ligier-Honda JSP2 retired from the lead with Oswaldo Negri Jr at the wheel halfway through the 10th hour with a sudden engine failure.
The two Chevrolet Corvette C7.Rs led the GT Le Mans class, with Antonio Garcia holding a one-second lead over team-mate Tommy Milner.
Frederic Makowiecki, who briefly jumped into the class after the race went green, was third in the best-placed of the factory Porsche 911 RSRs.
BMW lost its #100 M6 GTLM at 3am when Lucas Luhr crashed heavily at Turn 1 after a suspected brake disc failure.
The Prototype Challenge class was led by the JDC-Miller ORECA-Chevrolet FLM09 with Chris Miller at the wheel.
Andy Lally led the GT Daytona class aboard the Magnus Racing Audi R8 LMS from Jesse Krohn's Turner Motorsports BMW M6 GT3.