Police Tahoe's standard Vortec 5.3L V-8 engine receives a number of enhancements for 2007. It delivers more power – 320 horsepower (238 kW)* and 340 lb.-ft. of torque (470 Nm)*. That's 25 more horsepower and an additional 10 lb.-ft. of torque than the 2006 version of this engine. The Vortec 5.3L represents the newest chapter in GM's small-block's 50-year history and features Active Fuel Management technology, resulting in improved fuel economy. When combined with other vehicle-wide features, including improved aerodynamics, the small-block V-8 helps give the Tahoe the segment's best fuel economy. Preliminary testing with 5.3L-equipped models shows unadjusted combined fuel economy ratings of 20.5 mpg on 2WD models.
