 As an amateur, Porzio won the South American Heavyweight Championship in Buenos Aires, CF, Argentina, in 1923.He won a bronze medal in boxing at the 1924 Summer Olympics in the heavyweight division, losing against Otto von Porat in the semi-final.After his retirement, Porzio and his brother Tino were managers of many great Argentinian fighters, including Eduardo Lausse, Rafael Merentino, Atilio Caraune, Rinaldo Ansaloni, Ricardo González, Alfredo Bunetta, Rogelio Andrés, Miguel Rodríguez and José Santiago.