









Selling Used Mercruiser 7.4L Marine Inboard Engine 340-HP with 539 Hours
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Usually dispatched within 24 - 48 hours
Mercruiser 7.4L 340hp (454 ci) is a robust V8 marine engine, featuring a
90-degree block, hydraulic roller camshaft, 8.75:1 compression, producing 340 HP @ 4400 RPM and 435 lb-ft torque, using a standard rotation, 1-piece rear main seal, typically paired with carburetion.
Specifications
* Engine Type: GM 454 ci V8 (Big Block)
* Horsepower: 340 hp @ 4400 RPM (Carbureted)
* Torque: 435 lb-ft @ 3200 RPM
* Cylinders: 90-Degree V8
* Compression Ratio: 8.75:1
* Camshaft: Hydraulic Roller
* Firing Order: 1-8-4-3-6-5-7-2
* Rotation: Standard
* Oil Capacity: 7-8 quarts
* Recommended Oil: SAE 15W-40 Marine
* Cooling: Thermostatically Controlled Raw Water or Fresh Water
* Exhaust: Iron Manifolds with Dry-Joint Elbows
* Alternator: 65 Amp / 917 Watt.
Hours: 539 Hours.
Built to Order Engines
Built To Order engines are built exclusively for you, hence delivery is dependent on build time. Contact us using the form below to enquire about lead times for building your engine & estimated delivery times.
In Stock Engines
In stock engines are ready built and available for immediate dispatch subject to any custom configuration requirements.
The fee for shipping depends on your location and any additional configuration requested. Please submit an enquiry using the form below and we’ll contact you to discuss options and confirm the final price based on your requirements.