Davalos appeared in East of Eden (1955) as James Dean's brother Aron and portrayed the convict Blind Dick in Cool Hand Luke (1967). His other film credits include roles in I Died a Thousand Times (1955), All the Young Men (1960), The Cabinet of Caligari (1962), Pit Stop (1969), Kelly's Heroes (1970), Brother, Cry for Me (1970), Hot Stuff (1979), Death Hunt (1981), Something Wicked This Way Comes (1983) and Ninja Cheerleaders (2008).
He won the 1956 Theatre World Award for his performances in the Arthur Miller plays A View From the Bridge and A Memory of Two Mondays.
In the American Civil War television series, The Americans, broadcast by NBC in 1961, he played Jeff, the younger brother who joined the Confederate Army, in opposition to Ben, the older brother, played by Darryl Hickman, who joined the Union Army. In 1962 Davalos appeared on Perry Mason as Lt. Anderson's cousin, James Anderson, in "The Case of the Hateful Hero." In 1964 he appeared in "The Case of the Ice-Cold Hands." He guest-starred in an episode of the espionage drama series Blue Light in 1966.
Davalos died March 8, 2016, at St. Joseph Medical Center in Burbank, California.
