1989 Mercury MerCruiser Engine 5.7 350 V8 260HP

FOR SALE 1989 Mercury MerCruiser Engine 5.7 350 V8 260HP 400 HRS. Engine that runs great and has good compression, very low HOURS.

The 1989 Mercury Marine MerCruiser 5.7L (350 CID) engine is a marinized General Motors small-block V8. Rated at 260 horsepower, it is one of the most reliable and widely used inboard/sterndrive marine engines.

General Specifications

• Horsepower : 260 hp (194 kW) at the crankshaft
• Engine Type : 4-stroke, 90-degree V8
• Displacement : 350 CID (5.7 Liters)
• Operating RPM Range : 4,400 – 4,800 RPM (at Wide-Open Throttle)
• Fuel System : Usually equipped with a 4-barrel carburetor
• Recommended Fuel : 87 Octane Regular Gasoline

Mechanical Specifications

• Bore & Stroke : 4.00″ X 3.48″ (101.6 mm X 88.4 mm)
• Compression Ratio : 9.4:1
• Firing Order : 1-8-4-3-6-5-7-2
• Oil Pressure (at 2000 RPM) : 30 – 60 psi
• Idle RPM (in Neutral) : ~650 RPM

Drivetrain & Compatibility

• Drive Pairings : Commonly matched with the Mercury Alpha One or Bravo One sterndrives
• Fuel Consumption : Approximately 21.0 Gallons Per Hour (GPH) at Wide-Open Throttle (WOT)