MerCruiser Marine 340 HP 7.4 L 454 V8 CCW Inboard

FOR SALE MerCruiser Marine 340 HP 7.4 L 454 V8 CCW Inboard. This engine excellent condition. Drop in ready, engine great runs.

The MerCruiser 340 HP 7.4L 454 V8 is a legendary big-block inboard marine engine built on the dependable General Motors (GM) Mark IV/Gen V block. The “CCW” designation indicates a Counter-Clockwise rotating engine, commonly used in twin-engine setups to prevent the boat from pulling to one side.

Key Specifications

• Horsepower : 340 HP
• Displacement : 454 cubic inches (7.4 Liters)
• Cylinders : V8
• Rotation : Counter-Clockwise (CCW / Left-Hand) at the flywheel
• Fuel Delivery : Carbureted (earlier models) or Multiport Fuel Injection (MPI – later models)
• Max RPM Range : 4,000 – 4,400 RPM (typically cruises best at 3,200 – 4,000 RPM})
• Dry Weight : Approximately 965 – 980 lbs.