Offering multiple marine engine types across three different powertrain platforms, our portfolio of products includes a number of important marine-specific features, such as corrosion-resistant alloys, engine oil sealing systems, and cooling systems that are compatible with both saltwater and freshwater environments. Advanced performance- and efficiency-optimizing technologies, including Variable Valve Timing and Direct Fuel Injection, can also be found in many of our engines.

GM engineers spent more than 10 million computational analysis hours creating the next-generation Gen-V engine. Carefully designed to support the most ideal combination of Direct Injection, Active Fuel Management, and Variable Valve Timing—all of which translate into enhanced power and fuel efficiency—the Gen-V platform is available across three different displacements. Efficiency is even further improved with an all-new weight-saving cylinder block casting, increased compression ratios, and oil-jet piston cooling. Engineered for some of the most powerful on-road vehicles in the GM lineup, including the current-generation Corvette Stingray, Gen-V Series engines are then marinized for the specific demands of on-water applications.

Gen-V Series engines from GM Marine Engine Technology are used by Nautique, Centurion, MasterCraft, and other high-end boat brands.

Available Models:

• 6.2L V8
• 5.3L V8
• 4.3L V6

The Gen-1e 5.7L V8 is a legend in the marine industry. With its on-road roots running back to 1955, the current 5.7L builds on the impressive power and dependability of the original GM small-block. Introduced as a performance engine in the ‘67 Camaro, the 5.7L eventually became the best-known and most widely used Chevrolet small-block engine. With decades of proven marinization—and millions of engines sold in GM vehicles—the 5.7L has long been a go-to choice for boatbuilders looking for a power-dense engine that’s durable and cost-efficient.

Gen-1e Series engines from GM Marine Engine Technology can be found in MasterCraft and other popular boat brands.

Available models:

• Vortec 5.7 V8

General Motors’ legendary small-block architecture, which was introduced 60 years ago for on-road vehicles and continues to power through the 21st century, is a workhorse in the marine industry. Widely known as the “LS” platform, a nickname given to the series by enthusiasts who recognized the engines’ tremendous performance capabilities, the Gen-IV remains a proven powertrain. And with its compact size and powerful output, it’s a popular choice for boatbuilders in the competitive water-sports market.

Gen-IV Series engines from GM Marine Engine Technology can be found in many high-end boat brands using Ilmor, PCM, and Volvo Penta products.

Available models:

• 6.0L V8
• 6.2L SC