After a practice session dominated by Muscle Milk Aston Martin Racing, Guy Smith threw down the fastest lap for Dyson Racing on Friday morning in practice for Saturday's American Le Mans Series race at Long Beach. The Englishman set a time of 1:16.780 in Mazda-powered Lola that he will share with Chris Dyson in Saturday's race.

Smith was just 0.286sec quicker than Lucas Luhr in the Muscle Milk Lola-Aston Martin coupe. The German, a winner here with Audi Sport in 2008, will drive with Klaus Graf.

The battle was even closer in GT, where Flying Lizard Motorsports' Patrick Long set the class' fastest lap on his final pass at 1:20.264 in the Porsche 911 GT3 RSR that he will share with Joerg Bergmeister. The top four cars were within 0.816sec, and for a time the top nine cars were separated by less than a second.

Long and Bergmeister have won the last two years in class. The American Porsche factory driver was 0.258sec quicker than Joey Hand in one of BMW Team RLL's BMW M3 GTs. He will drive with Dirk Mueller, the pairing having won at Sebring with Andy Priaulx.

Gunnar Jeannette went quickest in LMPC for CORE autosport at 1:19.089 in the ORECA FLM09 he will share with Ricardo Gonzalez. Last year's LMPC co-winner was 0.324sec quicker than Alex Figge in PR1/Mathiasen Motorsports' entry, and Elton Julian – Jeannette's co-driver last year – was 0.829sec behind the CORE car.

Christophe Bouchut was quickest in LMP2 for Level 5 Motorsports at 1:20.261. The Frenchman was more than two seconds clear of teammate Luis Diaz in the second Level 5 entry.

Jeroen Bleekemolen returned to Black Swan Racing and promptly set the fastest GT Challenge lap – a 1:23.853 in the Porsche 911 GT3 Cup entry he will share with team owner Tim Pappas. Bleekemolen was just 0.554sec quicker than Magnus Racing's Craig Stanton – a Long Beach resident. Leh Keen was third for Alex Job Racing, 0.78sec behind Bleekemolen.

Qualifying is set for 8 p.m. Eastern time Friday evening.