Final | time | 1. Browning Ross | United States | 4:00.4 | 2. Guillermo Solá Aravena | Chile | 4:00.5 | 3. John Twomey | United States | 4:02.0 | 4. Curtis Stone | United States | 4:03.7 | 5. Oscar Gauharou | Argentina | 4:04.2 | 6. Luis Gonzaga Rodrigues | Brazil | 4:05.5 | -. Hugo Ponce | Argentina | | -. Libardo Mora | Colombia | | -. Frank Prince | Panama | | -. Wilfred Tull | Trinidad Tobago | |
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Heat 1 | time | 1. Curtis Stone | United States | 4:08.9 | 2. Guillermo Solá Aravena | Chile | 4:08.9 | 3. Hugo Ponce | Argentina | 4:10.1 | 4. Libardo Mora | Colombia | 4:10.8 | 5. Frank Prince | Panama | 4:11.9 | 6. Luis Secco | Argentina | | -. Luis Modesté | Trinidad Tobago | | -. Guillermo Rojas | Guatemala | | -. Argemiro Roque | Brazil | DNS | -. Anastasio Zelaya | Paraguay | DNS |
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Heat 2 | time | 1. Browning Ross | United States | 4:13.8 | 2. John Twomey | United States | 4:13.8 | 3. Luis Gonzaga Rodrigues | Brazil | 4:14.4 | 4. Oscar Gahuarou | Argentina | 4:14.9 | 5. Wilfred Tull | Trinidad Tobago | 4:15.2 | 6. Haroldo Gallardo Monsalves | Chile | | -. Rubén Figueredo | Paraguay | | -. Rogelio Gomez Rodriguez | Peru | | -. Efrain Recinos | Guatemala | DNS |
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