The 2007 Toyota Tundra is completely redesigned. Larger and stronger than before, Toyota's full-size truck offers three cab sizes, three bed lengths and three engine choices, including an all-new 381-horsepower 5.7-liter V8. Three engines are available on the 2007 Toyota Tundra half-ton truck. Standard on the Tundra Regular Cab and standard-bed Double Cab is a 4.0-liter V6 rated for 236 hp and 266 pound-feet of torque. Optional on these models and standard on all other Tundras is a 4.7-liter V8 capable of 271 hp and 313 lb-ft of torque. Optional across the line is a much stronger 5.7-liter V8 good for 381 hp and 401 lb-ft of torque.