Perkins

The Perkins 6.354 medium duty engine was designed to be compact enough to replace gasoline V8 engines in trucks, despite its in-line six-cylinder design. Producing 112 horsepower (84 kW) in early years (later rising to 120 hp), it had a small jackshaft driven by the timing gears for the auxiliary drive, with the oil pump driven by a quill shaft so it could run auxiliary equipment at engine speed with simple couplings.