| | No. | Class | Team | Drivers | Car | Thurs 15.45-16.30 | |
| 1 | 60 | DP | Michael Shank Racing | Mark Patterson Oswaldo Negri Justin Wilson Graham Rahal | Riley Ford | 1.40.793 | |
| 2 | 6 | DP | Michael Shank Racing | John Pew Ian James AJ Allmendinger Burt Frisselle | Riley Ford | 1.40.802 | |
| 3 | 91 | DP | Bob Stallings / Riley-Matthews | Jim Matthews Marc Goossens Johnny O'Connell Ryan Hunter-Reay | Riley Pontiac | 1.41.041 | |
| 4 | 10 | DP | SunTrust Racing | Wayne Taylor Max Angelelli Michael Valiante Ricky Taylor | Riley Pontiac | 1.41.161 | |
| 5 | 61 | DP | AIM Autosport | Brian Frisselle Mark Wilkins Andrew Ranger Colin Braun | Riley Ford | 1.41.413 | |
| 6 | 01 | DP | Chip Ganassi with Felix Sabates | Scott Pruett Memo Rojas Dario Franchitti Juan-Pablo Montoya | Riley Lexus | 1.41.505 | |
| 7 | 58 | DP | Brumos Porsche | Darren Law David Donohue Buddy Rice | Riley Porsche | 1.41.764 | |
| 8 | 11 | DP | SAMAX | Ryan Dalziel Milka Duno Tomas Enge Harold Primat | Riley Pontiac | 1.41.878 | |
| 9 | 7 | DP | Sigalsport | Matt Plumb Quentin Wahl Stephan Gregoire Michael Cullen Paddy Shovlin | Riley BMW | 1.41.975 | |
| 10 | 02 | DP | Chip Ganassi with Felix Sabates | Scott Dixon Dan Wheldon Salvador Duran Alex Lloyd | Riley Lexus | 1.41.996 | |
| 11 | 99 | DP | Bob Stallings / Riley-Matthews | Jon Fogarty Alex Gurney Jimmy Vasser Jimmie Johnson | Riley Pontiac | 1.42.160 | |
| 12 | 23 | DP | Alex Job Racing | Bill Auberlen Joey Hand Pat Long Andy Wallace | Crawford Porsche | 1.42.230 | |
| 13 | 9 | DP | Penske-Taylor Racing | Ryan Briscoe Helio Castroneves Kurt Busch | Riley Pontiac | 1.42.257 | |
| 14 | 2 | DP | SAMAX | Allan McNish Henri Zogaib Lucas Luhr Mike Rockenfeller | Riley Pontiac | 1.42,271 | |
| 15 | 76 | DP | Krohn Racing | Nic Jonsson Ricardo Zonta Darren Turner | Riley Pontiac | 1.42.296 | |
| 16 | 77 | DP | Doran Racing | Memo Gidley Brad Jaeger Fabrizio Gollin Gabriele Gardel | Doran Ford | 1.42.526 | |
| 17 | 59 | DP | Brumos Porsche / Kendall | Joao Barbosa JC France Hurley Haywood Terry Borcheller | Riley Porsche | 1.42.816 | |
| 18 | 3 | DP | Southard Motorsports | Shane Lewis Bill Lester Alex Barron Ted Christopher | Riley Lexus | 1.42.936 | |
| 19 | 12 | DP | RVO Motorsports | Roger Schramm Justin Bell Derek Bell Paul Dallenbach Tonis Kasemets | Riley Pontiac | 1.43.135 | |
| 20 | 03 | DP | Vision Racing | Ed Carpenter AJ Foyt John Andretti Tony George Vitor Meira | Crawford Pontiac | 1.43.342 | |
| 21 | 16 | DP | Cheever Racing | Fabio Babini Antonio Garcia Stephane Ortelli Matteo Bobbi | Coyote Pontiac | 1.43.618 | |
| 22 | 51 | DP | Cheever Racing | Scott Mayer Mike Newton Tommy Erdos Tom Kimber-Smith Brent Sherman | Coyote Pontiac | 1.43.709 | |
| 23 | 09 | DP | Spirit of Daytona Racing | Guy Cosmo Marc-Antoine Camirand Michael McDowell | Fabcar Porsche V8 | 1.44.920 | |
| 24 | 31 | DP | Matt Connolly Motorsports | Bob Frost Mirko Schultis Gordon Vipond | Chase Pontiac | 1.48.783 | (1.46.617) |
| 25 | 70 | GT | SpeedSource | David Haskell Sylvain Tremblay Nick Ham Raphael Matos | Mazda RX-8 | 1.50.758 | |
| 26 | 56 | GT | Mastercar | Thomas Biagi Matthew Marsh Luis Monzon Christian Montanari | Ferrari 430 | 1.50.873 | |
| 27 | 67 | GT | TRG | Tim George Spencer Pumpelly Bryan Sellers Richard Westbrook | Porsche GT3 Cup | 1.50.945 | |
| 28 | 34 | GT | Orbit | Lance Willsey Johnny Mowlem Mike Fitzgerald Tom Papadopoulos | Porsche GT3 Cup | 1.51.348 | |
| 29 | 21 | GT | Matt Connolly Motorsports | Vic Rice Karl Reindler Keith Rossberg Diego Alessi Hal Prewitt | Pontiac GTO.R | 1.51.450 | |
| 30 | 80 | GT | Synergy Racing | Mark Greenberg Damien Faulkner Jan Heylen Lance Arnold | Porsche GT3 Cup | 1.51.513 | |
| 31 | 64 | GT | TRG | Jim Lowe Jim Pace Tim Sugden Johannes van Overbeek RJ Valentine | Porsche GT3 Cup | 1.55.268 | 1.51.160 |
| 32 | 62 | GT | TRG | Claudio Burtin Jack Baldwin Scott Tucker Ed Zabinski Martin Ragginger | Porsche GT3 Cup | 1.51.573 | |
| 33 | 30 | GT | Racers Edge Motorsports | Ken Dobson Robert Thorne Drew Staveley Craig Stone | Mazda RX-8 | 1.51.606 | |
| 34 | 57 | GT | Stevenson Motorsports | Robin Liddell Andrew Davis Randy Pobst Gunnar Jeannette | Pontiac GXP.R | 1.51.717 | |
| 35 | 88 | GT | Farnbacher Loles Racing | Dave Lacey Greg Wilkins Pierre Kaffer Frank Stippler Eric Curran | Porsche GT3 Cup | 1.51.723 | |
| 36 | 66 | GT | TRG | Bryce Miller Ted Ballou Andy Lally Emmanuel Collard Romain Dumas | Porsche GT3 Cup | 1.51.802 | |
| 37 | 89 | GT | Farnbacher Loles Racing | Luca Drudi Raffael Giammaria Gabrio Rosa Jorg Hardt Giacomo Petrobelli | Porsche GT3 Cup | 1.51.805 | |
| 38 | 87 | GT | Farnbacher Loles Racing | Dirk Werner Dominik Farnbacher Pierre Ehret Timo Bernhard | Porsche GT3 Cup | 1.51.823 | |
| 39 | 86 | GT | Farnbacher Loles Racing | Wolf Henzler Eric Lux Leh Keen Sascha Maassen Jorg Bergmeister | Porsche GT3 Cup | 1.51.841 | |
| 40 | 15 | GT | Blackforest Motorsports | Tom Nastasi David Empringham Jean-Francois Dumoulin Boris Said | Mustang Cobra GT | 1.51.947 | |
| 41 | 81 | GT | Synergy Racing | Steve Johnson Patrick Huisman Robert Doornbos Richard Lietz | Porsche GT3 Cup | no time | 1.51.986 |
| 42 | 69 | GT | SpeedSource | Emil Assentato Nick Longhi Jeff Segal Lonnie Pechnik | Mazda RX-8 | 1.52.052 | |
| 43 | 07 | GT | Banner Racing | Paul Edwards Kelly Collins Jan Magnussen Andy Pilgrim | Pontiac GXP.R | 1.52.061 | |
| 44 | 90 | GT | Automatic Racing | Jep Thornton Tom Long Joe Varde David Russell | BMW M6 | 1.52.065 | |
| 45 | 74 | GT | Autometrics Motorsports | Derek Skea Bransen Patch Jim Hamblin Jake Rosenzweig David Murry | Porsche GT3 Cup | 1.53.812 | 1.52.081 |
| 46 | 27 | GT | O'Connell Racing | Kevin O'Connell Kevin Roush Hugh Plumb Mike Speakman | Porsche GT3 Cup | 1.52.095 | |
| 47 | 22 | GT | Alegra Motorsports | Carlos de Quesada Marc Basseng Patrick Pilet Nathan Swartzbaugh | Porsche GT3 Cup | 1.52.194 | |
| 49 | 06 | GT | Banner Racing | Paul Edwards Leighton Reese Robert Nearn Marc Bunting Andy Pilgrim | Pontiac GXP.R | 1.52.486 | |
| 48 | 29 | GT | Alegra Motorsports | Carlos de Quesada Scooter Gabel Bob Woodman Louisn-Philippe Dumoulin | Porsche GT3 Cup | 1.52.240 | |
| 50 | 40 | GT | Hyper Sport | Joe Foster Charles Espenlaub Patrick Dempsey Romeo Kapudija Scott Maxwell | Mazda RX-8 | 1.52.528 | |
| 51 | 63 | GT | TRG | Duncan Ende Ron Yarab Pierre Bourque Hima Maher | Porsche GT3 Cup | 1.52.278 | |
| 52 | 52 | GT | Mastercar | Roberto Ragazzi Ma Chi Min Franco Scapini Joe Castellano Fred Machado | Ferrari 430 | 1.54.855 | 1.52.372 |
| 54 | 72 | GT | Autohaus Motorsports | Lawson Aschenbach Tim Lewis Craig Stanton Max Papis | Pontiac GXP.R | 1.52.552 | |
| 53 | 14 | GT | Autometrics Motorsports | Cory Friedman Mac McGehee Anthony Lazzaro Ralf Kelleners | Porsche GT3 Cup | 1.52.473 | |
| 55 | 50 | GT | Blackforest Motorsports | John Farano Carl Jensen John Cloud Boris Said James Bradley | Mustang | < |
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