The 1966 NFL season was the 47th regular season of the National Football League, and the season after which was played Super Bowl I, though it was called the AFL-NFL World Championship Game. The league expanded to 15 teams with the addition of the Atlanta Falcons, thus an odd number of teams (making byes necessary). This was the last season that NFL teams were divided into just two groups called conferences, and only one round of playoffs was played, the NFL Championship game between the two conference champions. Taken from http://en.wikipedia.org/wiki/1966_NFL_season.

Final Stats:

NFL
Rank	Team	Coach	Top QB	Top RB	Top WR	Top Kicker	Top DEF Scorer
Champion 12 2	Green Bay Packers (Super Bowl Champions)	Vince Lombardi	Bart Starr	Elijah Pitts	Carroll Dale	Don Chandler	Bob Jeter
Runner-Up 10 3 1	Dallas Cowboys	Tom Landry	Don Meredith	Dan Reeves	Bob Hayes	Danny Villanueva	Chuck Howley
9 5	Cleveland Browns
9 5	Philadelphia Eagles
9 5	Baltimore Colts
8 5 1	St. Louis Cardinals
8 6	Los Angeles Rams
7 7	Washington Redskins
6 6 2	San Francisco 49ers
5 7 2	Chicago Bears
5 8 1	Pittsburgh Steelers
4 9 1	Minnesota Vikings
4 9 1	Detroit Lions
3 11	Atlanta Falcons
1 12 1	New York Giants
AFL
Rank	Team	Coach	Top QB	Top RB	Top WR	Top Kicker	Top DEF Scorer
Champion 11 2 1	Kansas City Chiefs (Super Bowl Runner-Up)	Hank Stram	Len Dawson	Bert Coan	Otis Taylor	Mike Mercer	Johnny Robinson
Runner-Up 9 4 1	Buffalo Bills	Joe Collier	Jack Kemp	Wray Carlton	Bobby Burnett	Booth Lusteg	Tom Janik
8 4 2	Boston Patriots
8 5 1	Oakland Raiders
7 6 1	San Diego Chargers
6 6 2	New York Jets
4 10	Denver Broncos
3 11	Houston Oilers
3 11	Miami Dolphins