| Bromme ??? |  | Offenhauser L4 |
| Connaught A |  | Lea Francis L4 |
| Cooper T23 |  | Bristol BS1 L6 |
| Cooper T24 |  | Alta GP L4 |
| Ewing D |  | Offenhauser L4 |
| Ferrari 375S |  | Ferrari 375 V12 |
| Ferrari 500/625 |  | Ferrari 625 L4 |
| Ferrari 553 |  | Ferrari 554 L4 |
| Ferrari 625 |  | Ferrari 625 L4 |
| Gordini T16 |  | Gordini 23 L6 |
| HWM 53 |  | Alta GP L4 |
| Klenk Meteor |  | BMW 328 L6 |
| Kurtis Kraft 2000 |  | Offenhauser L4 |
| Kurtis Kraft 3000 |  | Offenhauser L4 |
| Kurtis Kraft 4000 |  | Offenhauser L4 |
| Kurtis Kraft 500A |  | Chrysler V8
@Offenhauser L4
@Offenhauser L4 c |
| Kurtis Kraft 500B |  | Offenhauser L4 |
| Kurtis Kraft 500C |  | Offenhauser L4 |
| Kurtis Kraft ??? |  | Novi L8 c
@Offenhauser L4 |
| Kuzma Indy Roadster |  | Offenhauser L4 |
| Lancia D50 |  | Lancia DS50 V8 |
| Lesovsky ? |  | Offenhauser L4
@Offenhauser L4 c |
| Maserati 250F |  | Maserati 250F1 L6
@Maserati A6 L6 |
| Maserati A6GCM |  | Maserati A6 L6 |
| Mercedes W196 |  | Mercedes M196 L8 |
| Mercedes W196s |  | Mercedes M196 L8 |
| Moore ??? |  | Offenhauser L4 |
| Nichels ??? |  | Offenhauser L4 |
| Pankratz D |  | Offenhauser L4 |
| Pawl ??? |  | Offenhauser L4 |
| Phillips ??? |  | Offenhauser L4 |
| Schroeder ??? |  | Offenhauser L4 |
| Silnes ??? |  | Offenhauser L4 |
| Stevens ??? |  | Offenhauser L4 |
| Turner ??? |  | Offenhauser L4 |
| Vanwall Special |  | Vanwall 254 L4 |