How Much Can Your Duramax Handle?

Since we gave the Power Stroke guys a little insight, as to what their powerplants could handle, it’s time to take a look at what pushes the stock hardware of the Duramax mills to the brink. While it’s true that you’ll kill the Allison automatic long before you hurt the Duramax in front of it, we’re assuming all supporting mods have been performed (most notably, a built transmission and lift pump) for the purposes of illustrating what the 6.6L V8’s stock rotating assembly can handle. In our experience, you can get away with doubling the power output of each generation of the Duramax, but venturing beyond that has a tendency to bring out the breakage gremlins at an accelerated rate.