Naruto never became a Chunin or Jonin by rank. He failed to receive the title even after his second Chunin exam. Kakashi, the 6th Hokage, granted Naruto the rank of Jonin. ... He becomes the 7th Hokage while still being a Genin.

What episode of Naruto does he become a chunin?

Naruto Shippuden - Season 18 Episode 22: The Chunin Exams Begin! - Metacritic.

Does Naruto win the chunin?

Naruto doesn't pass the Chunin exams. He beats Neji, but then the Orochimaru starts his plan and Naruto ends up fighting Gaara, and winning. he doesn't become a Jonin until the end of the 4th Shinobi World War, and even then it takes 2 years.