General Motors has a winning formula in its Heavy Duty 3/4-ton 2500 and full-ton 3500 pickups, outperforming its rivals from Ram and Ford in the latest comparison tests. A lot of credit can go to the Allison transmissions mated to the 6.6-liter Duramax diesel engines under the hood. These titanic transmissions are responsible for seamlessly transferring 395 horsepower, and 765 pound-feet of torque to the wheels, and must sometimes do so with 23,000 pounds in tow, or 7,215 pounds in the bed. Moreover, they must be dependable and handle years and years of abuse. So far, Allison has seemed to live up to its stalwart reputation, and looks to build on it with a new transmission, the Allison 1350.
Designed for Class 4 and 5 medium-duty pickup trucks, the 1350 can handle an astonishing Gross Combined Weight Rating of 30,000 pounds. The current Allison 1000 found in GM’s 2500 and 3500 trucks is rated at a lesser 26,000 pounds. In addition, the 1350 comes with the Allison Optimized package. This includes Shift Energy Management (SEM), Low Range Torque Protection (LRTP), Load Based Shift Scheduling (LBSS), and Prognostics, all of which is designed to help conserve fuel, provide better acceleration, and carry loads in a more efficient manner.
Initially, the 1350 will be exclusively found in the International TerraStar medium-duty truck, but considering the healthy relationship between Allison and GM, along with several tips from our sources, it’s pretty obvious what’s going to happen. We can hear turbodiesels whirring with joy…