2024 Gm 6.6 Duramax Diesel Specs. The truck's l5p duramax diesel engine received a substantial bump in power and torque thanks to a stout list of upgrades, including a new turbocharger, improved piston. Chevrolet has made big improvements to the 2024 silverado hd 6.6 duramax turbo diesel.

It’s now rated at 470. Much of what went into the.