Assuming a properly tuned engine, there are three factors that contribute to poor streetability: long cam duration, high compression ratios, and excessive cruise rpm. Since cam selection is largely ...

When talking about engine speeds, you need to first be aware of average piston speed, which is a function of stroke times two and RPM, divided by 60. Fenske notes that in internal-combustion engines, ...

You almost certainly know the horsepower rating or displacement of your boat’s engine. But some marine-engine manufacturers have begun marketing torque over horsepower. In a break from standard ...