| 1 | Henry Banks | Moore ??? | Offenhauser L4 4.5 | Firestone | Blue Crown Spark Plug/Hopkins |
| 2 | Walt Faulkner | Kuzma Indy Roadster | Offenhauser L4 4.5 | Firestone | Agajanian Grant Piston Ring |
| 3 | Johnnie Parsons | Kurtis Kraft 3000 | Offenhauser L4 4.5 | Firestone | Wynn's Friction Proofing / Walsh |
| 4 | Cecil Green | Kurtis Kraft 3000 | Offenhauser L4 4.5 | Firestone | John Zink/M.A. Walker |
| 5 | Tony Bettenhausen | Deidt Tuffanelli Derrico | Offenhauser L4 4.5 | Firestone | Mobiloil/Rotary Engineering |
| 6 | Duke Dinsmore | Schroeder ??? | Offenhauser L4 4.5 | Firestone | Brown Motors |
| 7 | Paul Russo | Nichels ??? | Offenhauser L4 4.5 | Firestone | Kennedy Tank |
| 8 | Chuck Stevenson | Marchese ??? | Offenhauser L4 4.5 | Firestone | Bardahl/Carl Marchese |
| 9 | Manuel Ayulo | Kurtis Kraft 3000 | Offenhauser L4 4.5 | Firestone | Jack Hinkle |
| 9 | Jack McGrath | Kurtis Kraft 3000 | Offenhauser L4 4.5 | Firestone | Jack Hinkle |
| 10 | Bill Schindler | Kurtis Kraft 2000 | Offenhauser L4 4.5 | Firestone | H.A. Chapman |
| 12 | Johnny McDowell | Maserati 8CTF | Offenhauser L4 c 3.0 | Firestone | W.J. / Maserati Race Cars |
| 14 | Jerry Hoyt | Ewing ??? | Offenhauser L4 4.5 | Firestone | Pat Clancy |
| 16 | Mauri Rose | Deidt Tuffanelli Derrico | Offenhauser L4 4.5 | Firestone | Pennzoil/Howard Keck |
| 18 | Duke Nalon | Kurtis Kraft ??? | Novi L8 c 3.0 | Firestone | Novi Purelube/Jean Marcenac |
| 19 | Mack Hellings | Deidt Tuffanelli Derrico | Offenhauser L4 4.5 | Firestone | Tuffanelli-Derrico |
| 22 | George Connor | Lesovsky ? | Offenhauser L4 4.5 | Firestone | Blue Crown Spark Plug/Marant |
| 23 | Cliff Griffith | Kurtis Kraft 2000 | Offenhauser L4 4.5 | Firestone | Ludson Morris |
| 24 | Jackie Holmes | Adams ??? | Offenhauser L4 4.5 | Firestone | Richard Palmer |
| 25 | Sam Hanks | Kurtis Kraft 3000 | Offenhauser L4 4.5 | Firestone | Peter Schmidt |
| 26 | Joe James | Watson Indy Roadster | Offenhauser L4 4.5 | Firestone | Bob Estes Lincoln-Mercury |
| 27 | Duane Carter | Deidt Tuffanelli Derrico | Offenhauser L4 4.5 | Firestone | Mobiloil/Rotary Engineering |
| 29 | George Fonder | Deidt Tuffanelli Derrico | Sparks L6 c | Firestone | Ray Brady |
| 31 | Manuel Ayulo | Lesovsky ? | Offenhauser L4 4.5 | Firestone | Coast Grain |
| 32 | Chet Miller | Kurtis Kraft ??? | Novi L8 c 3.0 | Firestone | Novi Purelube/Jean Marcenac |
| 33 | Jimmy Daywalt | Meyer ??? | Novi L8 c 3.0 | Firestone | Iddings |
| 34 | Johnnie Tolan | Kurtis Kraft 2000 | Offenhauser L4 4.5 | Firestone | Peter Wales Trucking |
| 35 | Frank Armi | Bardazon ??? | Offenhauser L4 4.5 | Firestone | Hancock Dome |
| 36 | George Lynch | Rassey ??? | Offenhauser L4 4.5 | Firestone | Louis Rassey |
| 37 | Bob Sweikert | Kurtis Kraft 2000 | Offenhauser L4 4.5 | Firestone | Marion Engineering |
| 41 | Mike Salay | Szalai ??? | Offenhauser L4 4.5 | Firestone | Michael Szalai |
| 42 | Bill Boyd | Gdula ??? | Offenhauser L4 4.5 | Firestone | Ed Gdula |
| 44 | Walt Brown | Kurtis Kraft 3000 | Offenhauser L4 4.5 | Firestone | Federal Engineering |
| 45 | Jackie Holmes | Adams ??? | Offenhauser L4 4.5 | Firestone | Cincinnati Race Cars |
| 46 | Bayliss Levrett | Silnes ??? | Offenhauser L4 4.5 | Firestone | Safety Seal |
| 48 | Rodger Ward | Bromme ??? | Offenhauser L4 4.5 | Firestone | Deck Manufacturing |
| 49 | Joe Barzda | Maserati 8CTF | Offenhauser L4 4.5 | Firestone | Joe Barzda |
| 51 | Bud Sennett | Maserati 8CTF | Maserati L8 c 3.0 | Firestone | Auto Accessorie |
| 52 | Bobby Ball | Schroeder ??? | Offenhauser L4 4.5 | Firestone | Blakely Oil |
| 53 | George Fonder | Schroeder ??? | Offenhauser L4 4.5 | Firestone | Lutes Truck Parts |
| 57 | Andy Linden | Sherman ??? | Offenhauser L4 4.5 | Firestone | George Leitenberger |
| 58 | Frank Armi | Scopa ??? | Offenhauser L4 4.5 | Firestone | Joe Scopa |
| 59 | Fred Agabashian | Kurtis Kraft 3000 | Offenhauser L4 4.5 | Firestone | Granatelli-Bardahl/Grancor |
| 63 | George Fonder | Schroeder ??? | Offenhauser L4 4.5 | Firestone | Ray Brady |
| 64 | Frank Armi | Kurtis Kraft ??? | Duray L4 c | Firestone | Bardahl/Dick Page |
| 66 | Kenny Eaton | Stevens ??? | Offenhauser L4 4.5 | Firestone | Jeanie-Lee/Glessner |
| 67 | Gordon Reid | Silnes ??? | Chevrolet ??? | Firestone | Johnson / Herbert |
| 68 | Carl Forberg | Kurtis Kraft 3000 | Offenhauser L4 4.5 | Firestone | Automobile Shippers/Rassey |
| 69 | Gene Force | Kurtis Kraft 2000 | Offenhauser L4 4.5 | Firestone | Brown Motors |
| 71 | Bill Mackey | Hall ??? | Offenhauser L4 4.5 | Firestone | Karl Hall |
| 72 | Jimmy Bryan | Lesovsky ? | Offenhauser L4 4.5 | Firestone | Viking Trailer |
| 73 | Carl Scarborough | Kurtis Kraft 2000 | Offenhauser L4 4.5 | Firestone | McNamara/Lee Elkins |
| 75 | Leroy Warriner | Kurtis Kraft ??? | Offenhauser L4 4.5 | Firestone | George Heller |
| 76 | Jimmy Davies | Pawl ??? | Offenhauser L4 4.5 | Firestone | Parks Offenhauser/L.E. Parks |
| 77 | Doc Shanebrook | Stevens ??? | Offenhauser L4 4.5 | Firestone | Elgin Piston Pin |
| 78 | Ray Knepper | Silnes ??? | Offenhauser L4 4.5 | Firestone | Bardahl/Fred Tomshe |
| 81 | Bill Vukovich | Trevis Indycar | Offenhauser L4 4.5 | Firestone | Central Excavating/Pete Salemi |
| 83 | Mike Nazaruk | Kurtis Kraft 1000 | Offenhauser L4 4.5 | Firestone | Jim Robbins |
| 98 | Troy Ruttman | Kurtis Kraft 2000 | Offenhauser L4 4.5 | Firestone | Agajanian Featherweight |
| 99 | Lee Wallard | Kurtis Kraft ??? | Offenhauser L4 4.5 | Firestone | Murrell Belanger |
| 100 | Jean Achard | Talbot Lago T26C | Talbot 23CV L6 4.5 | Firestone | Privateer |