Allison Transmission (NYSE:ALSN) reported quarterly earnings of $2.57 per share which beat the analyst consensus estimate of $2.05 by 25.37 percent. This is a 15.25 percent increase over earnings of $2.23 per share from the same period last year. The company reported quarterly sales of $1.406 billion which beat the analyst consensus estimate of $1.379 billion by 1.95 percent. This is a 83.55 percent increase over sales of $766.000 million the same period last year.