Everyone doesnt have their balls in a bunch. If you would just read, GM claimed 100hp/liter and they achieved it...thats all. Its quite hard for large cube motors to produce 100hp/liter from the factory, maybe in a Honda. Look at the Viper, 8.3L 600hp, not 830hp. Or the Ls7, 7.0L 505hp, not 700hp. U get my drift, yeah its been going on, but not from factory high performance cars.