Gray Rat Snake, I think.

Here is a link that might be useful: Rat snake

Thats what I was thinking but this ons head is all black and his mouth is white and it has fangs. Its about 5ft long. I first though it was a water moccasin but all that I have seen are short and stocky and there is no water around. I saw an exact snake dead in the road about 1000ft from my house the day before.

Larry - All snakes have fangs. :)

It's an unusually dark grey rat snake, but it's a rat snake.

Water moccasins are fat-bodied compared to rat snakes, and this snake is long and skinny. A 5-foot moccasin would be as thick as your thigh.

Larry, all snakes have teeth. The rows of teeth in a Gray (or Black) Rat Snake will look like fangs. A Water Moccasin, or Cottonmouth, is a snake of swamps, and does not approach this size. Also, a Cottonmouth has a completely different pattern. Almost all snakes have a white inner lining of the mouth, making them look like a Cottonmouth when alarmed; the Black Rat Snake I caught Tuesday showed a white lining to the mouth while biting me three times (she was very frightened), plus, when looking in the Peterson's Guide, it doesn't look like Cottonmouths make it to Northern Alabama. Of course, people will call me a liar, and say they have seen "Water Moccasins", but these are simply Water Snakes, and are harmless.

Thank you all, I learned something.

Nice looking snake! Also confirming that it is a Gray Rat Snake.