These hulking diesel engines power the economy with massive torque, hundreds of horsepower, and hard-driving reliability.

Truck show mainstay and SPB Trucking owner Gary Jones showed off the latest addition to the fleet at MATS 2025 -- a 1979 Peterbilt 359 day cab, a rare sight among Jones' trucks, which often sport ...

Find out how much horsepower a semi truck really has—from 400HP workhorses to 730HP European beasts. Plus, why torque matters ...