What duramax is strongest?

Answer 1

The strongest Duramax ever is the 2011 Duramax that will be coming out in Summer of 2010. It produces 397 horsepower and 765 pound feet of torque. But the truck that this 6.6L sits in still can't tow or haul as much as Ford's new 6.7L Powerstroke which produces less power, at 390 horsepower and 735 pound feet of torque.

Answer 2

The Duramax engine with the highest horsepower and torque output is the 6.6L Duramax V8 found in the Silverado HD and Sierra HD, producing up to 445 horsepower and 910 lb-ft of torque.