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Zane Merva Executive Editor, GM-Trucks.com 9/27/2016 In the beginning of August, I put in my official prediction that the brand new 2017 Duramax engine would jump in power output considerably. Turns those predictions were extremely close. A few days ago GM Powertrain accidently leaked the official numbers on a public dealer portal website. TruckTrend was luck enough to grab a screen shot of the stats before GM took the numbers down from the internet. Here what TruckTrend caught. As you can see, the 2017 Duramax LP5 will be rated at 445-horsepower at 2,800RPM and 910 lb-ft of torque at 1,600RPM. Our guess in August came within 5-horsepower and 40 lb-ft. That now places GM's Chevrolet Silverado HD and GMC Sierra HD 5-horsepower ahead and only 15 lb-ft behind the Ford Super Duty. Is this enough for Chevrolet and GMC or should General Motors have tried for 1,000 lb-ft of torque? Stay tuned, GM-Trucks.com hopes to drive this all new Duramax soon.
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The test includes driving a vehicle up onto two staggered ramps. The deflection from the bed to the body is then measured. The tailgate is also operated under stress to test for binding and warping. After AMCI's third-party testing was complete, the Silverado 2500HD proved to be stronger than the Ford F-250. While Silverado HD only allowed .26-inches of twist, Ford Super Duty's frame warped .94-inches. Even worse, the Ford's tailgate was bound shut, unable to be opened. Chevrolet credits the use of high-strength roll-formed steel in the Silverado's bed for the strong results. Ford uses a less durable stamped steel. Take a look at how the test was completed for yourself. “The use of high-strength steel in the Silverado HD is what allows the Silverado to handle even the toughest of jobs,” said Jeff Luke, General Motors’ executive chief engineer for full-size trucks. “Paired with a fully boxed frame, high-strength steel is what makes the Silverado come from the family of the most dependable, longest-lasting full-size pickups on the road.”
