John Hunter Nemechek posted the fastest speed in the final Camping World Truck Series practice session of the season.
The NEMCO Motorsports driver recorded a speed of 165.239 mph around Homestead-Miami Speedway.
Nemechek was followed by Grant Enfinger (164.971), Kaz Grala (164.845), Noah Gragson (164.534) and championship driver Christopher Bell (164.414).
The three remaining championship drivers:
9th - Austin Cindric, 161.968 mph
13th - Matt Crafton, 160.839
14th - Johnny Sauter, 160.762
Myatt Snider, who was ninth fastest, recorded the most laps with 28.
Justin Haley had the best 10-lap average at 159.992 mph.
Cindric was the only playoff driver to make a 10-lap run. He had the fourth best 10-lap average at 159.441 mph.
Three drivers - Timothy Peters, Austin Wayne Self and Robby Lyons - experienced engine failures during the session.
The Truck Series will qualify for the Ford EcoBoost 200 at 3:30 p.m. ET on Fox Sports 1.