10 Diesel Engines Packing the Most Horsepower You’ll Actually Care About

6. GM 6.6L L5P Duramax V8 Turbo Diesel — Modern Muscle

Introduced in 2017 and still rocking, the L5P starts at 445 HP/910 lb-ft torque and recently bumped to 470 HP/975 lb-ft. It powers GM’s heavy-duty trucks like Silverado HD, with towing capacity soaring to 36,000 pounds. That’s serious strength for serious jobs.