| 2 | Jim Rathmann | Kurtis Kraft 500B | Offenhauser L4 4.5 | Firestone | Travelon Trailer / Ernest Ruiz |
| 3 | Sam Hanks | Kurtis Kraft 4000 | Offenhauser L4 4.5 | Firestone | Bardahl/Ed Walsh |
| 4 | Duane Carter | Lesovsky ? | Offenhauser L4 4.5 | Firestone | Miracle Power |
| 5 | Jack McGrath | Kurtis Kraft 4000 | Offenhauser L4 4.5 | Firestone | Jack Hinkle |
| 6 | Jim Rathmann | Moore ??? | Offenhauser L4 4.5 | Firestone | Wynn's Friction Proofing / Walsh |
| 7 | Paul Russo | Kurtis Kraft 3000 | Offenhauser L4 4.5 | Firestone | Federal Engineering |
| 8 | Jimmy Bryan | Schroeder ??? | Offenhauser L4 4.5 | Firestone | Blakely Oil |
| 9 | Duke Nalon | Kurtis Kraft ??? | Novi L8 c 3.0 | Firestone | Novi Governor |
| 10 | Henry Banks | Lesovsky ? | Offenhauser L4 4.5 | Firestone | Hopkins/Motor Racers |
| 12 | Ernie McCoy | Stevens ??? | Offenhauser L4 4.5 | Firestone | H.A. Chapman |
| 14 | Bill Vukovich | Kurtis Kraft 500A | Offenhauser L4 4.5 | Firestone | Fuel Injection/Howard Keck |
| 15 | Chet Miller | Kurtis Kraft ??? | Novi L8 c 3.0 | Firestone | Novi Governor |
| 16 | Art Cross | Kurtis Kraft 4000 | Offenhauser L4 4.5 | Firestone | Springfield Welding/Paoli |
| 17 | Joe Sostilio | Kurtis Kraft 500A | Chrysler V8 4.5 | Firestone | Belanger Motors |
| 21 | Johnnie Parsons | Kurtis Kraft 500B | Offenhauser L4 4.5 | Firestone | Belond Equa-Flow |
| 22 | Marshall Teague | Kurtis Kraft 4000 | Offenhauser L4 4.5 | Firestone | Pure Oil/Hart Fullerton |
| 23 | Walt Faulkner | Kurtis Kraft 500A | Offenhauser L4 4.5 | Firestone | Automobile Shippers/Casaroll |
| 23 | Johnny Mantz | Kurtis Kraft 500A | Offenhauser L4 4.5 | Firestone | Automobile Shippers/Casaroll |
| 24 | Cliff Griffith | Kurtis Kraft 500B | Offenhauser L4 4.5 | Firestone | Bardahl/Ed Walsh |
| 25 | George Connor | Kurtis Kraft 500A | Chrysler V8 4.5 | Firestone | Chrysler / Wolcott |
| 26 | Eddie Johnson | Kurtis Kraft 4000 | Offenhauser L4 4.5 | Firestone | City of Detroit |
| 28 | Pat O'Connor | Deidt Tuffanelli Derrico | Offenhauser L4 4.5 | Firestone | Slick Racers |
| 29 | Bob Scott | Bromme ??? | Offenhauser L4 4.5 | Firestone | Belond Equa-Flow/Bromme |
| 31 | Len Duncan | Schroeder ??? | Offenhauser L4 4.5 | Firestone | Caccia Motors |
| 32 | Andy Linden | Stevens ??? | Offenhauser L4 4.5 | Firestone | Cop-Sil-Loy/Rotary Engineering |
| 33 | Art Cross | Kurtis Kraft 4000 | Offenhauser L4 4.5 | Firestone | Ray Brady |
| 34 | Eddie Sachs | Kurtis Kraft 2000 | Offenhauser L4 4.5 | Firestone | Ludson Morris |
| 35 | Buzz Barton | Pawl ??? | Offenhauser L4 4.5 | Firestone | Parks Offenhauser/L.E. Parks |
| 36 | Potsy Goacher | Pankratz D | Offenhauser L4 4.5 | Firestone | Sid Street Motors |
| 38 | Don Freeland | Watson Indy Roadster | Offenhauser L4 4.5 | Firestone | Bob Estes |
| 39 | Bill Taylor | Lesovsky ? | Offenhauser L4 4.5 | Firestone | Blue Crown Spark Plug/Hopkins |
| 41 | Gene Hartley | Kurtis Kraft 4000 | Offenhauser L4 4.5 | Firestone | Federal Engineering |
| 42 | Willard Cantrell | Pankratz D | Offenhauser L4 4.5 | Firestone | Emmett Malloy |
| 43 | Roy Newman | Maserati 8CTF | Maserati L8 c 3.0 | Firestone | Roy Newman |
| 44 | Leroy Warriner | Kurtis Kraft 1000 | Offenhauser L4 4.5 | Firestone | Jim Robbins |
| 46 | Johnny Fedricks | Kurtis Kraft 500B | Offenhauser L4 4.5 | Firestone | Dunn Engineering |
| 48 | Jimmy Daywalt | Kurtis Kraft 3000 | Offenhauser L4 4.5 | Firestone | Sumar/Chapman Root |
| 49 | Bill Holland | Kurtis Kraft 500B | Offenhauser L4 4.5 | Firestone | Ray Crawford |
| 51 | Bob Sweikert | Kuzma Indy Roadster | Offenhauser L4 4.5 | Firestone | Dean Van Lines |
| 52 | Duke Dinsmore | Kurtis Kraft 2000 | Offenhauser L4 4.5 | Firestone | Sarafoff |
| 53 | Jimmy Davies | Kurtis Kraft 500B | Offenhauser L4 4.5 | Firestone | Pat Clancy |
| 55 | Jerry Hoyt | Kurtis Kraft 4000 | Offenhauser L4 4.5 | Firestone | John Zink |
| 56 | Johnny Thomson | Del Roy ??? | Offenhauser L4 4.5 | Firestone | Dr. R.N. Sabourin |
| 57 | Hal Robson | Voelker ??? | Voelker ??? | Firestone | Voelker |
| 59 | Fred Agabashian | Kurtis Kraft 500B | Offenhauser L4 4.5 | Firestone | Grancor-Elgin Piston Pin |
| 61 | Bill Holland | Kurtis Kraft 3000 | Offenhauser L4 4.5 | Firestone | Slick Racers |
| 62 | Spider Webb | Kurtis Kraft 3000 | Offenhauser L4 4.5 | Firestone | Lubri-Loy/3-L Racing Team |
| 63 | Danny Oakes | Moore ??? | Offenhauser L4 4.5 | Firestone | Lindsey Hopkins |
| 64 | Pat O'Connor | Kurtis Kraft 4000 | Offenhauser L4 4.5 | Firestone | Engle-Stanko |
| 65 | Allen Heath | Ewing D | Offenhauser L4 4.5 | Firestone | Commercial Motor Freight |
| 66 | Johnnie Tolan | Kurtis Kraft 500A | Chrysler V8 4.5 | Firestone | Chrysler / Wolcott |
| 67 | Johnny Kay | Clemons ??? | Offenhauser L4 4.5 | Firestone | Jeanie-Lee/Glessner |
| 69 | Joe Barzda | Maserati 8CTF | Maserati L8 c 3.0 | Firestone | California Speed |
| 71 | Jackie Holmes | Kurtis Kraft ??? | Offenhauser L4 4.5 | Firestone | Merkler Machine Works |
| 73 | Carl Scarborough | Kurtis Kraft 2000 | Offenhauser L4 4.5 | Firestone | McNamara/Lee Elkins |
| 74 | Pat O'Connor | Schroeder ??? | Offenhauser L4 4.5 | Firestone | Brown Motors |
| 75 | Wayne Selser | Christy ??? | Offenhauser L4 4.5 | Firestone | Christy |
| 76 | George Fonder | Silnes ??? | Offenhauser L4 4.5 | Firestone | George Leitenberger |
| 77 | Pat Flaherty | Kurtis Kraft 3000 | Offenhauser L4 4.5 | Firestone | Peter Schmidt |
| 78 | Cal Niday | Kurtis Kraft 4000 | Offenhauser L4 4.5 | Firestone | Storey-Ricketts |
| 79 | Frank Armi | Kurtis Kraft 4000 | Offenhauser L4 4.5 | Firestone | Mel-Rae/Mel Wiggers |
| 81 | Len Duncan | Trevis Indycar | Offenhauser L4 4.5 | Firestone | Central Excavating/Pete Salemi |
| 82 | Johnny Roberts | Kurtis Kraft 2000 | Offenhauser L4 4.5 | Firestone | William Burns |
| 83 | Mike Nazaruk | Turner ??? | Offenhauser L4 4.5 | Firestone | Kalamazoo/Lee Elkins |
| 84 | Bill Homeier | Lesovsky ? | Offenhauser L4 4.5 | Firestone | Coast Grain |
| 85 | Johnnie Tolan | Kurtis Kraft 4000 | Offenhauser L4 4.5 | Firestone | Blakely Oil |
| 86 | Bill Boyd | Kurtis Kraft 2000 | Offenhauser L4 4.5 | Firestone | Merz Engineering |
| 87 | Bill Homeier | Kurtis Kraft 500B | Cadillac V8 4.5 | Firestone | Cal Connell |
| 88 | Manuel Ayulo | Kuzma Indy Roadster | Offenhauser L4 4.5 | Firestone | Peter Schmidt |
| 89 | Spider Webb | Maserati 8CTF | Offenhauser L4 4.5 | Firestone | Fadely-Anderson/R.A. Cott |
| 91 | Red Hamilton | Kurtis Kraft 4000 | Offenhauser L4 4.5 | Firestone | Clyde Dillon |
| 92 | Rodger Ward | Kurtis Kraft 4000 | Offenhauser L4 4.5 | Firestone | M.A. Walker Electric |
| 93 | Al Herman | Kurtis Kraft 2000 | Offenhauser L4 4.5 | Firestone | Traylor Engineering |
| 95 | Jorge Daponte | Johnson ??? | Wayne L6 4.5 | Firestone | Wayne |
| 96 | Jud Larson | Snowberger ??? | Offenhauser L4 4.5 | Firestone | Helin Flyer |
| 97 | Chuck Stevenson | Kuzma Indy Roadster | Offenhauser L4 4.5 | Firestone | J.C. Agajanian |
| 98 | Tony Bettenhausen | Kuzma Indy Roadster | Offenhauser L4 4.5 | Firestone | J.C. Agajanian |
| 99 | Cal Niday | Kurtis Kraft 4000 | Offenhauser L4 4.5 | Firestone | Miracle Power |