Engine    
4.0 L 1GR-FE V6 (VVT-i)
236 horsepower (2007 - 2013)
4.0 L 1GR-FE V6 (Dual VVT-i)
270 horsepower (2014) 
4.7 L 2UZ-FE V8 (VVT-i)
276 horsepower (2007 - 2009) 
4.6 L 1UR-FE V8 (VVT-i)
310 horsepower (2010 - present) 
5.7 L 3UR-FE V8 (Dual VVT-i)
381 horsepower

Transmission    
5-speed automatic
6-speed automatic (AB60E/F)
6-speed automatic (A760E/F)

Dimensions
Wheelbase    
Regular cab 6.5' box: 126.8 (3220 mm)
Regular cab 8' box/Double Cab 6.5' box/CrewMax 5.5' box: 145.7 (3700 mm)
Double Cab 8' box: 164.6 (4180 mm)
Length    
Regular cab 6.5' box: 209.8 in (5,329 mm)
Regular cab 8' box/Double Cab 6.5' box/CrewMax 5.5' box: 228.7 in (5,809 mm)
Double Cab 8' box: 247.6 in (6,289 mm)
Width    
79.9 in (2,029 mm)
Height    
Regular Cab 4WD: 76.2 in (1,935 mm)
Regular Cab LB 4WD & Double Cab 4WD: 76.4 in (1,941 mm)
CrewMax 4WD: 76.0 in (1,930 mm)
Regular & Double Cab 2WD: 75.8 in (1,925 mm)
CrewMax 2WD: 75.6 in (1,920 mm)

Toyota Tundra on Wikipedia

2007–2009 model years

4.0 L V6 GR engine 236 hp (176 kW) and 266 lb⋅ft (361 N⋅m) (California Air Resources Board (CARB) LEV II certified)

4.7 L V8 UZ engine 276 hp (206 kW) and 313 lb⋅ft (424 N⋅m) (CARB ULEV II certified)

5.7 L V8 UR engine 381 hp (284 kW) and 401 lb⋅ft (544 N⋅m) (CARB ULEV II certified)

2010–2013 model years

4.0 L V6 GR engine 236 hp (176 kW) and 266 lb⋅ft (361 N⋅m) (CARB LEV II certified) (2010)

4.0 L V6 GR engine 270 hp (201 kW) and 278 lb⋅ft (377 N⋅m) (CARB LEV II certified) (2011-2013)

4.6 L V8 UR engine 310 hp (231 kW) and 327 lb⋅ft (443 N⋅m) (CARB ULEV II certified)

5.7 L V8 UR engine 381 hp (284 kW) and 401 lb⋅ft (544 N⋅m) (CARB ULEV II certified)

2014-

4.0 L V6 GR engine 276 hp (206 kW) and 283 lb⋅ft (384 N⋅m) (CARB LEV II certified) 2014 only

4.6 L V8 UR engine 310 hp (231 kW) and 327 lb⋅ft (443 N⋅m) (CARB ULEV II certified)

5.7 L V8 UR engine 381 hp (284 kW) and 401 lb⋅ft (544 N⋅m) (CARB ULEV II certified)