Toyota offers three engines across the Tundra model line: the base 4.0-liter V6 makes 236 horsepower at 5,200 rpm and 266 lb.-ft. of torque at 4,000 rpm; the 4.7-liter V8 generates 271 horsepower at 5,400 rpm and 313 lb.-ft. of torque at 3,400 rpm, and the all-new 5.7-liter aluminum block V8 rated at 381 horsepower at 5,600 rpm and 401 lb.-ft. of torque at 3,600 rpm. Compared to GM's powertrains, you'd have to buy the $39,000 GMC Sierra Denali to get more power and grunt. Transmissions include a five-speed automatic for the V6 and 4.7-liter V8, while the 5.7-liter engine gets a six-speed automatic. Back at GM, you can only get a six-speed with your Denali; otherwise GM offers four-speed automatics.