| Final | time | | | 1. Frank McKinney | USA | 1:07.1 | EPR | | 2. Pedro Galvao | ARG | 1:07.3 | | 3. Leonide Baarcke | USA | 1:07.6 | | 4. Joao Goncalves | BRA | 1:08.3 | | 5. Ted Simpson | CAN | 1:08.9 | | 6. Clemente Mejia | MEX | 1:10.3 |
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| Heat 1 | time | Rk. | | 1. Frank McKinney | USA | 1:07.2 | | 2. Joao Goncalves | BRA | 1:08.4 | | 3. Hugo Sora | ARG | 1:09.8 | | 4. Clemente Mejia | MEX | 1:10.5 | | 5. Roberto de Carvalho | BRA | 1:11.0 | | 6. Antonio Galvez | CUB | 1:12.3 | | 7. Allen Brew | CAN | 1:15.5 |
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| Heat 2 | time | Rk. | | 1. Leonide Baarcke | USA | 1:07.1 | | 2. Ted Simpson | CAN | 1:08.1 | | 3. Peter Witteried | USA | 1:09.8 | | 4. Fernando Pavan | BRA | 1:11.4 | | 5. Alejandro Gaxiola | MEX | 1:11.9 | | 6. Jose Maria Izquierre | ARG | 1:12.3 | | 7. Luis Echeverria | COL | 1:14.9 |
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