400 m, Men
| Competition | 1984 South American Athletics U20 Championships |
|---|---|
| Venue |
Caracas
 VEN
|
| Held | — |
| Status | Medal |
| Competitors | 3 |
| Countries | 3 |
| Pos | Athlete(s) | Country | Mark | ||
|---|---|---|---|---|---|
| 🥇 | Carlos Morales |  CHI |
48.0 | ||
| 🥈 | Sérgio de Menezes |  BRA |
48.4 | ||
| 🥉 | Joaquim Gasca | VEN |
48.6 |