2024 Gm 6.6 Duramax Diesel Specs And Reviews. For 2024, this burly powerplant sees an increase to 470 hp along with a. Complete information, specs, power and torque ratings on gm's 6.6l l5p v8 turbo diesel duramax engine used in the chevy silverado hd and gmc sierra hd.

Both engine options are now paired to. Here’s all the info you need to know, from when it was first built to all those big numbers.