| Final | time | _____________________ | | 1. |  United States | 3:09.9 | | | Hugo Maiocco, William Brown, John Voight, Malvin Whitfield. res: Guillermo Evans | | 2. |  Chile | 3:17.7 | | | Jaime Hitelman Reitich,Jorn Gevert, Reinaldo Martin Muller, Gustavo Ehlers Trostel | | 3. |  Argentina | 3:18.4 | | | Máximo Guerra,Guido Veronese, Eduardo Balducci, Julio Ferreyra Lima. res: Ramon Sandoval | | 4. |  Cuba | 3:20.0 | | | Angel Garcia Delgado, Raúl Mazorra Zamorra, Samuel Anderson Schweyer, Evelio Planas del Rio. res: Juan Saez | | 5. |  Mexico | | | | Javier Sousa Diaz, Sergio Guiot Bouchez, Carlos Camargo Leon, Carlos Monges Caldera. res: Vicente Tavarez Chavez | | 6. |  Paraguay | | | | Fermin Villalba, Anastasio Zelaya, Rubén Figueredo, José Zelaya del Pilar. res: Celso Gonzalez Brinzuela, Oscar Corvalan |
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