What actors and actresses appeared in White Trash - 1977?

You're likely thinking of a film called " White Line Fever" (1975), which features a cast including:

* Jan-Michael Vincent as Carrol "Cody" Blake

* Kay Lenz as Sherry

* Slim Pickens as Sheriff Jake "Dog" Calhoun

* Quentin Tarantino (in his first credited film role) as "Hitchhiker"

There appears to be no film titled "White Trash" from 1977. It's possible the title was misremembered or you are thinking of a different film altogether.