Ford Lehman 2723 Marine Engine: Reliable Power for Inboard Propulsion The Ford Lehman 2723 is a robust inboard diesel engine engineered for marine propulsion, delivering dependable power to a wide range of vessels. Renowned for its durability in demanding saltwater environments, this engine excels in providing smooth, efficient thrust for both recreational and commercial boating. At its core, the Lehman 2723 features a 6-cylinder inline configuration with a displacement of 5,950 cm³ (362.6 cubic inches), optimized for balanced operation. Key technical specifications include a bore of 105 mm (4.13 inches), a stroke of 115 mm (4.52 inches), and a high compression ratio of 16.1:1, which promotes superior combustion efficiency. As an inboard diesel unit, it integrates seamlessly with standard marine transmissions, though specific reduction gear details may vary by installation. Tailored for marine applications, the Lehman 2723 offers distinct advantages, including excellent weight distribution for enhanced vessel stability and handling during coastal or offshore voyages. Its diesel construction withstands corrosive marine conditions, with low maintenance needs and extended service intervals minimizing downtime. The inline-6 layout ensures vibration-dampened performance, while the moderate displacement strikes an ideal balance between potent output and fuel economy, reducing operational costs on extended journeys. Performance-wise, the engine’s high compression ratio yields impressive thermal efficiency and torque, particularly from its elongated 115 mm stroke, enabling steady power delivery without excessive fuel burn. Although exact horsepower and RPM ratings are not specified, its design supports versatile RPM ranges suitable for sustained cruising, with inherently low emissions for eco-conscious operations. Ideal for mid-sized cruisers, fishing boats, and light commercial vessels, the Ford Lehman 2723 is a proven workhorse for applications demanding reliability over raw speed. Whether navigating inland waterways or tackling open seas, it embodies the timeless engineering that has made Lehman engines a staple in marine propulsion. (Word count: 278)