In an internal combustion engine there are many factors that affect horsepower and torque production. However, there are no factors that are more fundamentally impactful on power output and engine RPM than cylinder bore and piston stroke. But what is bore and stroke? These two measurements allow a car like the 2025 Ford Mustang to produce up to 480 horsepower from its 5.0-liter V8, while the 2025 Ram 2500 makes roughly 1200 pound feet of torque from its turbocharged inline six-cylinder. Read on to find out the meaning of bore and stroke, their effects on engine output, and how these two dynamics work together to give us the right engine for the job.
Â
