29/7/2019 · The 3100 Series, the half-ton model, had a 3.5L I-6 engine with 78 horsepower and 170 lb.-ft. of torque. The three-quarter ton model was the 3600, and the one-ton model was the 3800. In 1954, Chevy released updated Advanced Design trucks, which had a new grille, windshield, steering wheel, instrument panel and parking lights, as well as a more powerful engine.