A war is about to erupt in the diesel-powered half-ton pickup truck segment. GM has recently released details on the weapon in its arsenal, a 4.5L Duramax diesel. Due to a narrow angle V-block, this motor is small enough to fit in the same space as many of GM’s small block gasoline powered V8s. This provides hope for applications other than half ton pickup trucks. Surely GM’s large SUVs will see this motor under the hood.