Originally Posted by dc3655

Don't be fooled by the Allison name badge. In my experiences with the Torqshift and the Allison, I definitely think the Torqshift is a far superior tranny, not to mention that it will take a lot more power without needing an update kit like the Allison needs. I compared the two descending down a 8% grade while towing the same boat and the Torqshift did a much better job at maintaining the speed as well as not overheating. The Allison is at max capacity with the power levels of the current Duramax output, whereas the Torqshift is barely over half capacity with what the PSD is putting out. Think it over long and hard before going down a costly road.