FOR SALE MerCruiser 5.7 350 260 HP Marine Engine INBOARD. This Engine excellent condition, has been tested and great runs.

The MerCruiser 5.7L (350 CID) 260 HP is a legendary, GM-based small-block V8 inboard/sterndrive marine engine. Known for its raw torque and bulletproof reliability, it has been widely used in runabouts, cruisers, and ski boats

Engine Specifications

• Engine Type : 4-Stroke, V8, marinized General Motors (GM) Small Block
• Displacement : 5.7 Liters (350 cubic inches)
• Horsepower : 260 HP (194 kW) at the crankshaft
• Operating RPM Range : 4,400 to 4,800 RPM at Wide-Open Throttle (WOT)
• Compression Ratio : 9.4:1
• Bore x Stroke : 4.00″ X 3.48″ (101 mm X 88 mm)
• Fuel Type : 87 Octane Gasoline

Key Mechanical Features

• Fuel Delivery : Historically featured a 4-barrel carburetor or basic Throttle Body Injection (TBI) depending on the production year.
• Engine Block : Cast iron block and cylinder heads built to withstand heavy marine loads.
• Cooling System : Raw-water cooled or closed-cooling (freshwater) system for enhanced corrosion prevention.
• Ignition : Typically paired with Thunderbolt Ignition systems for maintenance-free reliability.