Today, Nissan announced the details for its new 5.6-liter Endurance V8 gasoline engine that will power the Titan and Titan XD. The new engine, which Nissan says was assembled in Decherd, Tennessee, bookends the story of the first phase of the “American Titan” story. The engine features four-valves per cylinder, Variable Valve Event & Lift and Direct Injection, and is rated at 390 horsepower @ 5,800 rpm and 401 lb-ft of torque @ 4,000 rpm.