EntrantsGridGrand Prix
| Official Name | I Copa de Acción San Lorenzo |
|---|---|
| Circuit | Parque Independencia |
| Date | March 2 |
| Pole | Luigi Villoresi 01:46.000 |
| Fastest Lap | |
| Podium | 1st Achille Varzi, 2nd Luigi Villoresi, 3rd Óscar Alfredo Gálvez |
| Prev race | Stockholm Grand Prix February 23 |
| Next race | Circuito de Interlagos March 30 |
| P | N | Driver | Team | Car | Engine | Tyre | Time | Laps | Gr | Pts |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 18 |  Achille Varzi |
Ecurie Naphtra Course | Alfa Romeo Tipo 308 |
Alfa Romeo L8C 3.0 | - | 01:33:03.600 | 50 |
2 |
0 |
| 2 | 16 | Luigi Villoresi |
Scuderia Ambrosiana | Maserati 4CL [1583] |
Maserati 4CL L4C 1.5 | - | 01:33:04.000 | 50 |
1 |
0 |
| 3 | 10 |  Óscar Alfredo Gálvez |
YPF/Cerveza Quilmes | Alfa Romeo Tipo 308 [50017] |
Alfa Romeo L8C 3.8 | - | +1 lap | 49 |
4 |
0 |
| 4 | 14 |  Chico Landi |
Francisco Landi | Alfa Romeo Tipo 308 [50016] |
Alfa Romeo L8C 3.0 | - | +2 laps | 48 |
5 |
0 |
| 5 | 8 | Juan Gálvez |
Juan Gálvez | Alfa Romeo Tipo B/P3 [50009] |
Alfa Romeo L8C 3.2 | - | +3 laps | 47 |
10 |
0 |
| 6 | 54 | Juan Manuel Fangio |
J. M. Fangio |  Ford T |
Chevrolet 3.9 | - | +3 laps | 47 |
11 |
0 |
| 7 | 40 | Clemar Bucci |
C. Bucci | Cadillac 16c |
Cadillac 7.4 | - | +3 laps | 47 |
13 |
0 |
| 8 | 2 | Ítalo Bizio |
Italo Bizio | Alfa Romeo 8C-2900A [412002] |
Alfa Romeo L8C 3.1 | - | +4 laps | 46 |
6 |
0 |
| 9 | 41 | Ernesto Nanni |
E. Nanni | Rosa R5 |
Ford V8 3.6 | - | +4 laps | 46 |
12 |
0 |
| 10 | 38 | Mario Sessarego |
M. Sessarego | Chevrolet Special |
Chevrolet 3.9 | - | +4 laps | 46 |
14 |
0 |
| 11 | 22 |  Raph (Georges Raphaël) |
Ecurie Naphtra Course | Maserati 4CL [1571] |
Maserati 4CL L4C 1.5 | - | +11 laps | 39 |
7 |
0 |
| 12 | 6 | Giacomo Palmieri |
Ecurie Naphtra Course | Maserati 6CM [1562] |
Maserati 6CM L6C 1.5 | - | +14 laps | 36 |
8 |
0 |
| DNF | 4 | Pablo Pessatti |
P. Pesatti | Alfa Romeo 8C-35 [50014] |
Alfa Romeo L8C 3.0 | - | DNF | 5 |
3 |
0 |
| DNF | 58 | Pedro Llano |
P. Llano | Maserati 6CM |
Maserati 6CM L6C 1.5 | - | DNF | 0 |
9 |
0 |
| DNF | 33 | Benedicto Campos |
B. Campos | Willys Whippet |
Ford 2.9 | - | DNF | 0 |
15 |
0 |
| DNS | 12 | Pascual Puópolo |
Enrico Platé | Maserati 6CM |
Maserati 6CM L6C 1.5 | - | DNS | 0 |
0 |