| EVENT | GOLD | SILVER | BRONZE |
|---|---|---|---|
| Flyweight (– 51 kilograms) | Hilario Correa Mexico | Manuel Lugo Vega Chile | Ramón Arias Venezuela |
| Bantamweight (– 54 kilograms) | Salvador Enriquez Venezuela | Wardy Yee United States | Roberto Lobos Chile |
| Featherweight (– 57 kilograms) | Oswaldo Cañete Argentina | Claudio Barrientos Chile | Marcial Galicia Mexico |
| Lightweight (– 60 kilograms) | Miguel Angel Péndola Argentina | Gerardo Clemente Puerto Rico | Ricardo Orta Venezuela |
| Light Welterweight (– 63.5 kilograms) | Juan Carlos Rivero Argentina | William Morton United States | Celestino Pinto Brazil |
| Welterweight (– 67 kilograms) | James Dorando United States | Antonio Nigri Argentina | — |
| Light Middleweight (– 71 kilograms) | Paul Wright United States | Raul Tovar Venezuela | Alberto Sáenz Argentina |
| Middleweight (– 75 kilograms) | Orville Pitts United States | Miguel Safatle Chile | Arnaldo Serra Argentina |
| Light Heavyweight (– 81 kilograms) | Luis Ingnacio Brazil | Antonio Escalante Argentina | John Stewart United States |
| Heavyweight (+ 81 kilograms) | Pablo Alexis Miteff Argentina | Adão Waldemar Brazil | Norvel Lee United States |
| 1 | Argentina | 4 | 2 | 2 | 8 |
| 2 | United States | 3 | 2 | 2 | 7 |
| 3 | Brazil | 1 | 1 | 1 | 3 |
| – | Venezuela | 1 | 1 | 1 | 3 |
| 5 | Mexico | 1 | 0 | 1 | 2 |
| 6 | Chile | 0 | 3 | 1 | 4 |
| 7 | Puerto Rico | 0 | 1 | 0 | 1 |