During his time at River Plate he won 4 titles and is considered one of their greatest ever players.

After a very successful time at River Plate He moved to Platense, from 1951 to 1953, where he played in 39 games making 3 goals.

Muñoz played 11 times for the Argentina national team scoring two goals, he was part of the squad that won Copa América 1945.

After retiring as a player Muñoz went on to become the manager and then president of Club Atlético Platense.

On 22 November 2009, Muñoz died in Buenos Aires due to a heart attack.