Ponyboy has a scab on his neck, which is visible in quite a few scenes, that was the result of being cut by a Soc in the original opening where Ponyboy is jumped by Socs after leaving a movie theater.
When Dallas falls out of his chair at the drive-in, it was completely accidental, and Ponyboy (C. Thomas Howell) looks briefly at the camera while laughing.
After the boys come over for breakfast near the end of the movie, Ponyboy goes out on the porch. When he goes out (at 55:13 in 91 m.) there is a rip in the screen in door. When he comes back in the rip is gone (at around 26 mins). This is because the screen is pulled away from the frame near the door handle which can be seen when the door is open (55:13), but not when the door is closed (55:26).
The movie is set in 1965. However, when Dallas is reading the magazine, just before he robs the convenience store, comic books from DC Comics and Charlton Comics are shown with logos that were introduced in 1977 and 1973 respectively. Also, one of the titles shown (Captain Carrot and the Zoo Crew) was based on characters who were first introduced in 1982.
In the scene where Ponyboy is reading the letter from Sodapop, Dally is seen in the background with his right thumb hooked in his pants pocket (43:31 to 43:38 in 91 m.). The shot switches to a close-up of Dally lighting his cigarette with just his left hand while his right hand is about chest high (43:39 to 43:42). Then the camera comes back to Ponyboy with Dally in the background with his right thumb hooked in his pants pocket (43:43 to 43:45).
Ponyboy: When I stepped out,into the bright sunlight from the darkness of the movie house,I had only two things on my mind: Paul Newman,and a ride home.
Dallas: Johnny, you don't know what a few months in jail can do to you, man. You get mean in jail, I just don't wanna see that happen to you like it happened to me, man. Understand?
Why is there a "complete novel" edit of the film, and why is there new music?
A
Coppola decided that his father's original score was so over-operatic that it distanced the audience from the characters, so for the new cut, it was replaced with period music. The edit itself was made in large part because of Coppola's granddaughter. S.E. Hinton's original novel is required reading in many middle school English classes, and Coppola's granddaughter was reaching the age where she would be required to read it. Coppola says he was asked, either by her or a classmate, why so many scenes from the book were not in the final cut of the movie. He decided for the sake of his granddaughter and her classmates to restore the missing scenes.
Q
How could Johnny stop Dallas from bothering Cherry when Dallas is obviously the toughest and meanest guy in the gang?
A
SE Hinton has Pony explain in the book that Johnny is essentially the weakest member of the group and also the one they're all most likely to both pity and protect. Johnny had been attacked by a group of Socs in the recent past who slashed his face with a knife and had beaten him badly. After the attack, the rest of the gang began to protect him and Pony because they were the gang's youngest members.One of Johnny's attackers, Bob, wore several rings on his fingers which added to the vicious beating. After the incident Johnny started carrying a switchblade.Also, in the novel Ponyboy says that Johnny is probably the only thing Dally ever loved. That may be the reason that Dallas would listen to Johnny in that situation.