 Internapoli achieved their first promotion under the new dominion in the 1966–67 season, it was a closely competed league with Internapoli beating out second place Savoia by just one point.As they were promoted into Serie C to start a four-season spell in the league, Internapoli began to gather popularity gaining a fan club of 6000 strong, it was called ""Amici dell'Internapoli"" (Friends of Internapoli).Brazilian Luís Vinício was manager during one season in this Serie C period, the squad of the time included a bright young striker in Giorgio Chinaglia who would later go on to fame with Lazio.