Dally's plea to Johnny not to turn himself in reveals how much he actually cares for the other boy:
"Johnny, I ain't mad at you. I just don't want you to get hurt. You don't know what a few months in jail can do to you" (89).
Despite Dally's tough exterior and hardened persona, he shows that he genuinely cares for Johnny like a younger brother; this moment transforms his characterization in the novel by revealing that Dally does have a sensitive, caring side. Moreover, Dally acts selflessly to save Johnny from the church fire, putting himself at risk to help someone else, which is a direct contrast to his earlier self-centered attitude. Chapter Six really showcases Dally as a character who does care deeply for his fellow gang members, that he does, in fact, have a heart.