Vortec 5.3L V8 SFI FlexFuel engine

This Vortec® 5.3L V8 engine gives you more while demanding less. Innovative Active Fuel Management® delivers added power when needed and better efficiency when it isn't by automatically deactivating 4 of the 8 cylinders when traveling on level ground. The E851 capability allows the engine to run on unleaded or up to 85 percent ethanol, giving you more options at filling time. Constructed with an iron block for added strength and rigidity.

Gasoline

  • 320 hp @ 5400 rpm
  • 335 lb-ft of torque @ 4000 rpm
  • MPG 15 city, 21 highway2

E85 ethanol

  • 326 hp @ 5300 rpm
  • 348 lb-ft of torque @ 4400 rpm
  • MPG 11 city, 16 highway3 
1 E85 is a combination of 85% ethanol and 15% gasoline. Go to chevy.com/biofuels to see if there is an E85 fuel station near you.
2 EPA estimated when running on gasoline.
3 EPA estimated when running on E85.