Matched with 6.8-liter V-8 engine power for a winning combination of power, performance, and reliability, the Allison Optimized 1000 Series transmission features Shift Energy Management (SEM), Load-Based Shifting Scheduling (LBSS) and Automatic "Neutral" for simplified operations and greater powertrain durability.About Navistar
Navistar Showcases International TerraStar 4x4 Work Truck
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