In a blatant attempt at keep up with the escalating torque wars shaping up in the heavy-duty pickup segment, GM showed us the latest version of its Duramax 6.6-liter V-8 turbo-diesel inside a Silverado 2500 4x4 on an autocross course and in several 3500 duallies pulling a box trailer filled with 10,000 pounds of cement.
The engine is impressive and will serve Chevrolet and GMC HD pickups and their customers well. The engine is new in just about every detail and now delivers 910 pounds-feet of torque. Here are a few highlights from what we saw at the 2016 State Fair of Texas and what we thought about the upgrades.
Cars.com photos by Angela Connors