Powering the 2007 Lincoln Navigator is a 5.4-liter V8 good for 300 horsepower at 5,000 rpm and 365 lb.-ft. of torque at 3,750 rpm, delivered to the rear or all four wheels through a new six-speed automatic transmission. Maximum tow capacity is 9,100 pounds when properly equipped. The Navigator also gets a new independent rear suspension design for improved handling and stability.