MERCURY 300.FD3N61 Engine 6-144 1293421

( Model: COMET ), ( Part Type: Engine ), ( Conditions Options: 144, At, Good Runner, Lifter Tick ), ( Genuine Oem: Yes ), ( Ipn: 300.fd3n61 )

Review MERCURY Engine Assembly Fits fits COMET 300 1961

Introducing the Mercury 300.FD3N61 engine, a powerful and efficient powerhouse that was specifically designed for the 1961 Comet. This engine is a part of the Mercury "Falcon" series and is a 6-cylinder, 300 cubic inch (5.0 Liter) engine. It is known for its exceptional performance and reliability.

The Mercury 300.FD3N61 engine boasts a unique dual-quad four-barrel carburetor system, which delivers an impressive air-fuel mixture for optimal combustion. This results in a robust output of 300 net horsepower at 5200 rpm and 375 lb-ft of torque at 3600 rpm.

The engine block is made of cast iron, providing superior strength and durability. Its crankshaft is forged from high-strength steel, ensuring smooth and consistent power delivery. The cylinder heads are also made of cast iron and feature a hemispherical combustion chamber design for increased compression and power.

The Mercury 300.FD3N61 engine is equipped with a hydraulic lifter system, which eliminates the need for adjustments and provides a quiet and smooth engine operation. It also features a solid-state ignition system, which ensures quick and reliable spark delivery.

The engine is mated to a 3-speed Cruise-O-Matic transmission, providing a smooth and effortless driving experience. It also offers a choice between manual and automatic shifting modes, catering to various driving preferences.

The Mercury 300.FD3N61 engine is designed to meet the highest standards of emissions regulations, ensuring a clean and eco-friendly driving experience. Its powerful and efficient performance, coupled with its durability and reliability, makes it an excellent choice for the 1961 Comet and a worthy addition to any classic car enthusiast's collection.

The Mercury 300.fd3n61 engine, a 6-144 model produced in 1961 for the Comet automobile, can be an intriguing find for classic car enthusiasts or collectors. Before deciding to purchase one, it's essential to weigh the pros and cons to make an informed decision.

1. Authenticity: Owning an original Mercury engine from the 1960s adds to the historical value of the Comet.

2. Performance: The 300.fd3n61 engine offers decent power and torque for its era, which can contribute to an enjoyable driving experience.

3. Rarity: This engine model is less common compared to more modern counterparts, making it an unique addition to a collection.

4. Potential for restoration: For those interested in engine restoration projects, this engine presents an opportunity to learn and improve the mechanical skills.

1. Availability of parts: Due to the rarity of this engine, it may be challenging to find replacement parts if needed, which could increase costs.

2. Maintenance: Older engines like this one may require more frequent maintenance and repairs due to their age and wear.

3. Fuel efficiency: The Mercury 300.fd3n61 engine is not known for its fuel efficiency, which could result in higher operating costs.

4. Compatibility: Ensure that the engine is compatible with other components in the Comet before purchasing, as some parts may need to be replaced or modified to work together.

The Mercury 300.fd3n61 engine presents both unique advantages and potential challenges for those considering a purchase. The engine's historical significance, decent performance, and rarity can make for an exciting addition to a classic car collection. However, the potential difficulties in obtaining parts, higher maintenance requirements, and lower fuel efficiency should be carefully considered before making a decision.

For those genuinely passionate about classic cars and engines, the Mercury 300.fd3n61 engine could be an excellent investment. However, it's crucial to be prepared for the potential challenges, have a clear understanding of the engine's compatibility with the Comet, and allocate sufficient resources for maintenance and parts. Ultimately, the decision to purchase this engine should be based on personal interests, collection goals, and a realistic assessment of the associated costs and challenges.

Details:

Dispute Resolution. Normal wear and tear from the previous use is expected. Labor and Related Costs: This limited warranty does not cover labor, diagnostics, towing, rental car costs, or any other expenses related to the installation, testing, removal, replacement of a part

Axles Assemblies: Axle assemblies will not include any brake hardware: Calipers/Rotors/Shoes/Pads/Hoses/Brake Lines. Bolt-on items Transmissions: Transmissions will come with the torque converter and all sensors. Sensors, valve covers, timing covers attached to core short/long blocks are not covered.

Exclusions from Limited Warranty. Bumper assemblies DO NOT come with Upper Grilles unless stated. All parts sold as is except expressly provided below.

Steering Columns: All steering columns sold will come without airbags. Please remember you are purchasing OEM Original Equipment Manufacturer USED parts. The part is not a custom body cut. Limited Warranty Coverage.

Scope: This limited warranty covers defects in the purchased part that render it inoperable or defective within 90-day period. The part has not been installed. Any bulbs or wiring still attached to the,Tail Light,assemblies are not warranted part of the listing in any way. No expedited shipping is available.

The part is not a special order. 144,AT,GOOD RUNNER,LIFTER TICK. Brokered/non-stocked parts ordered specifically for your request. Convenience Items: Items attached to or included with the part, such as wiring, bulbs, sockets, sensors, coils, distributor caps, spark plugs, water pumps, filters, brake parts, backing plates, hoses, vacuum lines, u-joints, timing belts/components, similar items, are considered convenience items and not covered by this limited warranty.

The part has not been altered, modified, disassembled, overheated or damaged. Check the Q A section for Business Support.

part #: 300.fd3n61 prices

• $750.00-$1018.47

specifications grokengines:

• for models: 300, Comet
• for makes: Mercury
• for years: 1961
• model: Comet
• part type: Engine
• conditions options: 144, At, Good Runner, Lifter Tick
• genuine oem: Yes
• ipn: 300.fd3n61

seller grokengines:

• # reviews: 40415
• rating: 99.6%
• city: Annandale, Minnesota

returns grokengines:

• paid by: Buyer
• time: 30 Days
• policy: Returns Accepted

shipping grokengines:

• transit: 2-7 Days
• class: Standard
• type: Fixed
• cost: $325.00
• service: Standard

general grokengines:

• Car Truck Parts Accessories > Engines Engine Parts > Engines
• condition: Used

offer grokengines:

• sold: 0
• started: November 24, 2025
• quantity: 1
• options: Ship-to-home
• availability: In Stock

payments grokengines:

• credit card: Visa
• wallet: Paypal
• other

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