New information is starting to trickle in on the redesigned Duramax 6.6L L5P V-8 turbo-diesel for the 2017 GMC Sierra and Chevy Silverado HDs. As we wrote on our blog this past summer, we’ve been watching the 2017 models closely, waiting to see just who will unveil the biggest and baddest diesel in 2017. GMC/Chevy had kept details about the 2017 Duramax close to the chest, until recently when it was officially announced the next-gen engine more horsepower and torque than ever, with SAE-certified 445 horsepower (332 kW) and 910 lb.-ft. […]