The men's 4 × 100 metre freestyle relay competition of the swimming events at the 1979 Pan American Games took place on 3 July at the Piscina Olimpica Del Escambron. The last Pan American Games champion was the United States.Hickoksports Hickosports ResultsAll Pan medalists - MalePan American Games - Swimming and Diving page, from gbrathletics.com; retrieved 2012-04-15.ISHOF list with all medalists in Pan Am Games history

This race consisted of eight lengths of the pool. Each of the four swimmers completed two lengths of the pool. The first swimmer had to touch the wall before the second could leave the starting block.

Results All times shown are in minutes and seconds.

KEY:qFastest non-qualifiersQQualifiedGRGames recordNRNational recordPBPersonal bestSBSeasonal best

Heats The first round was held on July 3.

Rank Name Nationality Time Notes 1 - - - - 3:29.86 Q 2 - - - - 3:33.60 Q 3 - - - - 3:34.21 Q 4 - - - - 3:37.81 Q 5 - - - - 3:38.25 Q 6 - - - - 3:43.39 Q 7 - - - - 3:45.70 Q 8 - - - - 3:47.86 Q 9 - - - - 3:49.13 10 - - - - 3:54.77

Final The final was held on July 3. Rank Name Nationality Time Notes Rowdy Gaines (50.41) NR, GR Jack Babashoff (51.26) John Newton (50.71) David McCagg (51.33) 3:23.71 NR, GR Graham Welbourn (52.96) Alan Swanston (51.92) Bill Sawchuk (52.45) Peter Szmidt (52.31) 3:29.64 Djan Madruga (53.38) Cyro Delgado (52.52) Rômulo Arantes (52.51) Jorge Fernandes (52.45) 3:30.86 SA 4 Carlos Berrocal (53.82) Filiberto Colon (54.23) Fernando Cañales (50.46) Jorge Martinez (54.24) 3:32.75 NR 5 Oscar González (54.35) Alfredo Romo (54.24) César Sánchez (55.33) Richard Sasser (53.42) 3:37.34 NR 6 - - - - 3:42.33 NR 7 - - - - 3:43.46 8 - - - - 3:45.34

References