A stronger Duramax turbodiesel engine will be available on Heavy Duty GM trucks starting next year. Thanks to numerous improvements, the V8 will now make 360 hp at 3,000 rpm and an incredible 650 ...

turbocharger force-feeding GM's massive 6.6-liter (403 cu-in) Duramax diesel V8 gave my prodigious Silverado 2500HD 4X4 tester the acoustics to match its stunning torque rating of 650 pound-feet.

We may receive a commission on purchases made from links. The Duramax namesake has been alive for over 20 years and has been offered in 12 different variations. While there are some newer engines in ...