Silvera continued his career in films and guest star roles on television. In 1965, he appeared as Gaspar, one of the Biblical Magi in the epic film "The Greatest Story Ever Told", In 1966, he teamed with Marlon Brando for the third time in the Western "The Appaloosa". The next year, he portrayed Nick Sorella in "The St. Valentine's Day Massacre", followed by guest roles on "Dundee and the Culhane" and "The Wild Wild West". He appeared as a Mexican bandit in the 1967 Martin Ritt-directed Western classic, "Hombre", based on the Elmore Leonard novel. In 1969, Silvera had a supporting role as Goatherd in "Che!", and as Lobero in the Zapata Western "Guns of the Magnificent Seven".