Spradlin, who was famed for playing authority figures, passed away of natural causes at his ranch in San Luis Obispo on Sunday (24Jul11), according to his grandson.
Starting his career as a lawyer, before working as an independent oil producer, Spradlin didn't start acting until he was in his 40s, when producer Fred Roos cast him in TV shows I Spy and Gomer Pyle, U.S.M.C.
He went on to play a corrupt senator in The Godfather: Part II and a general in Apocalypse Now, as well as roles in Ed Wood and The Long Kiss Goodnight.
The actor also directed two movies, The Only Way Home and Outside In, both released in 1972.
He is survived by his wife, Frances, two daughters and five grandchildren.