| Final | time | __________ | | 1. United States |  USA | 37.90s | | | Lee McRae, Lee McNeill, Harvey Glance, Carl Lewis | | 2. Soviet Union |  URS | 38.02s | | | Aleksandr Yevgenyev, Viktor Bryzgin, Vladimir Muravyov, Vladimir Krylov | | 3. Jamaica |  JAM | 38.41s | | | John Mair, Andrew Smith, Clive Wright, Raymond Stewart | | 4. Canada |  CAN | 38.47s | | | Ben Johnson, Atlee Mahorn, Desai Williams, Mike Dwyer | | 5. West Germany |  FRG | 38.73s | | | Fritz Heer, Volker Westhagemann, Christian Haas, Norbert Dobeleit | | 6. Hungary |  HUN | 39.04s | | | Istvan Nagy, Laszlo Karaffa, Istvan Tatar, Attila Kovacs | | 7. Italy |  ITA | 39.62s | | | Ezio Madonia, Domenico Gorla, Paolo Catalano, Pierfrancesco Pavoni | | 8. China |  CHN | 39.93s | | | Tao Li, Jianming Cai, Feng Li, Chen Zheng |
| Semi 1 | time | Rk. | __________ | | 1. Soviet Union | URS | 38.29s | 1. | | | Aleksandr Yevgenyev, Viktor Bryzgin, Vladimir Muravyov, Vladimir Krylov | | 2. Canada | CAN | 38.50s | 3. | | | Ben Johnson, Atlee Mahorn, Desai Williams, Mike Dwyer | | 3. West Germany | FRG | 38.84s | 6. | | | Fritz Heer, Volker Westhagemann, Christian Haas, Norbert Dobeleit | | 4. Italy | ITA | 39.52s | 10. | | | Ezio Madonia, Stefano Tilli, Paolo Catalano, Pierfrancesco Pavoni | | 5. Japan |  JPN | 39.71s | 11. | | | Kaoru Matsubara, Hirohisa Ota, Masahiro Nagura, Hiroki Fuwa | | 6. Spain |  ESP | 39.74s | 12. | | | Miguel Angel Garcia, Juan Jose Prado, Angel Heras, Javier Arques | | 7. Ghana |  GHA | 39.94s | 14. | | | John Myles-Mills, Emmanuel Tuffour, Salaam Gariba, Eric Akogyiram | | 8. Senegal |  SEN | 40.22s | 15. | | | Charles-Louis Seck, Hamidou Diawara, Joseph Dias, Amadou Mbaye |
| Semi 2 | time | Rk. | __________ | | 1. United States | USA | 38.33s | 2. | | | Lee McRae, Lee McNeill, Harvey Glance, Dennis Mitchell | | 2. Jamaica | JAM | 38.66s | 4. | | | John Mair, Andrew Smith, Clive Wright, Raymond Stewart | | 3. Hungary | HUN | 38.78s | 5. | | | Istvan Nagy, Laszlo Karaffa, Istvan Tatar, Attila Kovacs | | 4. China | CHN | 39.05s | 7. | | | Tao Li, Jianming Cai, Feng Li, Chen Zheng | | 5. Cuba |  CUB | 39.08s | 8. | | | Ricardo Chacon, Leandro Penalver, Sergio Querol, Andres Simon | | 6. Brazil |  BRA | 39.22s | 9. | | | Joilto Bonfim, Carlos De Oliveira, Arnaldo Oliveira Silva, Robson Caetano Da Silva | | 7. Taiwan |  TPE | 39.90s | 13. | | | Cheng-Chuan Lai, Shiun-Long Lee, Yih-Yuan Chang, Hsin-Fu Cheng | | 8. Portugal |  POR | 40.24s | 16. | | | Arnaldo Abrantes, Pedro Curvelo, Luis Cunha, Luis Barroso |
| Heat 1 | time | Rk. | __________ | | 1. United States | USA | 38.80s | 2. | | | Lee McRae, Lee McNeill, Harvey Glance, Dennis Mitchell | | 2. Hungary | HUN | 39.11s | 6. | | | Istvan Nagy, Laszlo Karaffa, Istvan Tatar, Attila Kovacs | | 3. Japan | JPN | 39.49s | 8. | | | Kaoru Matsubara, Hirohisa Ota, Masahiro Nagura, Hiroki Fuwa | | 4. China | CHN | 39.63s | 11. | | | Tao Li, Jianming Cai, Feng Li, Chen Zheng | | 5. Spain | ESP | 40.20s | 16. | | | Enrique Talavera, Juan Jose Prado, Miguel Angel Garcia, Javier Arques | | 6. Uganda |  UGA | 40.22s | 17. | | | Moses Musonge, Joseph Ssali, Sunday Olweny, Edward Bitoga | | -. Great Britain |  GBR | DQ | | | | Lincoln Asquith, John Regis, Mike McFarlane, Clarence Callender |
| Heat 2 | time | Rk. | __________ | | 1. Soviet Union | URS | 38.98s | 4. | | | Aleksandr Yevgenyev, Viktor Bryzgin, Vladimir Muravyov, Andrey Fedoriv | | 2. West Germany | FRG | 39.10s | 5. | | | Fritz Heer, Volker Westhagemann, Christian Haas, Norbert Dobeleit | | 3. Brazil | BRA | 39.57s | 9. | | | Joilto Bonfim, De Oliveira, Silva Carlos, Da Arnaldo Oliveira | | 4. Italy | ITA | 39.58s | 10. | | | Ezio Madonia, Stefano Tilli, Paolo Catalano, Pierfrancesco Pavoni | | 5. Ghana | GHA | 39.77s | 12. | | | John Myles-Mills, Emmanuel Tuffour, Salaam Gariba, Eric Akogyiram | | 6. Taiwan | TPE | 40.05s | 14. | | | Cheng-Chuan Lai, Shiun-Long Lee, Yih-Yuan Chang, Hsin-Fu Cheng |
| Heat 3 | time | Rk. | __________ | | 1. Canada | CAN | 38.76s | 1. | | | Ben Johnson, Atlee Mahorn, Desai Williams, Mike Dwyer | | 2. Jamaica | JAM | 38.88s | 3. | | | John Mair, Andrew Smith, Clive Wright, Raymond Stewart | | 3. Cuba | CUB | 39.44s | 7. | | | Ricardo Chacon, Leandro Penalver, Sergio Querol, Andres Simon | | 4. Senegal | SEN | 39.83s | 13. | | | Charles-Louis Seck, Hamidou Diawara, Joseph Dias, Amadou Mbaye | | 5. Portugal | POR | 40.10s | 15. | | | Arnaldo Abrantes, Pedro Curvelo, Luis Cunha, Luis Barroso | | -. Nigeria |  NGR | DNS | | | | Augustine Olobia, Patrick Nwankwo, Innocent Egbunike, Chidi Imoh |
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