440275A PACKARD Engine

Review PACKARD Engine Assembly

The Packard 440275A engine, manufactured between 1955 and 1956, is a testament to Packard's engineering prowess during this era. This straight-8 engine, specifically modeled as 440971, is a powerful and reliable workhorse that boasts impressive specifications.

The engine's displacement is 354.5 cubic inches (5,787 cubic centimeters), which is achieved through its eight cylinders arranged in a V-configuration with a bore and stroke measurement of 3.75 inches by 3.96 inches (95.25 millimeters by 99.68 millimeters), respectively. The engine's compression ratio is a robust 7.5:1, ensuring efficient combustion and ample power output.

The Packard 440275A engine utilizes a single-barrel carburetor, modeled as 6480406CD, for effective air-fuel mixture delivery. The engine's distributor, located at the front of the engine, manages the ignition system, distributing spark plug voltage to each cylinder in the correct sequence for optimal engine performance.

This engine is renowned for its robustness and durability. The engine block is made of iron, providing a strong foundation for the engine's components. The engine's crankshaft is forged from high-strength steel, ensuring it can handle the rigors of daily use. The connecting rods are also made of steel, ensuring a strong connection between the crankshaft and pistons.

The Packard 440275A engine's cooling system is designed to maintain a consistent operating temperature, even under heavy loads. The engine features a water pump, radiator, and thermostat for efficient cooling. The engine's oiling system ensures that all moving parts are lubricated, reducing wear and tear and prolonging the engine's life.

This engine is a favorite among classic car enthusiasts and collectors due to its impressive power output, durability, and iconic status in automotive history. The Packard 440275A engine is a testament to Packard's commitment to engineering excellence and a reminder of the golden age of American automotive manufacturing.

The Packard 440275A engine, with the model numbers 1955-1956 and 440971, and the serial number 6480406CD, is a historic automotive engine known for its durability and power. Here are some pros and cons of buying this engine, based on its historical significance, availability, cost, and performance.

1. Historical significance: The Packard 4402 engine was a powerful and reliable workhorse used in various applications, including automobiles, trucks, and industrial equipment, from the late 1940s to the 1960s. Owning a 440275A engine is a way to connect with automotive history and preserve a piece of engineering excellence.

2. Availability: While the demand for this engine may be lower than for more common engines, it is still possible to find one for sale in various markets, including online marketplaces, engine swap meet events, and private collections.

3. Performance: The 440275A engine delivers impressive power and torque, making it suitable for various applications where high performance is required. It has a displacement of 8.2 liters (506 cubic inches) and produces around 250 horsepower.

4. Durability: The Packard 4402 engine is known for its robustness and longevity, which is a significant advantage for those who plan to use the engine for heavy-duty applications or restore a classic vehicle.

1. Cost: The cost of acquiring a Packard 440275A engine can be high due to its rarity and historical significance. Prices can range from a few thousand dollars for a rebuilt engine to tens of thousands of dollars for a fully restored original engine.

2. Complexity: The Packard 4402 engine is a complex piece of machinery, with many moving parts and intricate systems. This complexity can make it challenging and time-consuming to restore or maintain the engine, especially for those without experience in engine rebuilding.

3. Compatibility: The Packard 440275A engine may not be easily compatible with modern vehicles or aftermarket parts, which can limit its usefulness for some applications.

The Packard 440275A engine is an exceptional piece of automotive history, with impressive performance, durability, and a unique character that sets it apart from more common engines. However, its high cost, complexity, and potential compatibility issues can make it a challenging acquisition for some.

If you are an automotive enthusiast with a passion for historical engines and the resources to invest in acquiring, restoring, and maintaining a Packard 440275A engine, it can be a rewarding and meaningful addition to your collection. However, if you are looking for a more practical, cost-effective, and easily compatible engine solution, you may want to consider other options. Ultimately, the decision to buy a Packard 440275A engine depends on your specific requirements, budget, and level of expertise.

Details:

Complete motor with accessory's won't turn over by hand inspected a few cylinders they are clean will come starter as well manifolds.

specifications engineblocksam:

• for years: 1955–1956
• brand: Packard
• mpn: 440275a
• casting number: 440275-a
• custom bundle: Yes
• fitment type: Direct Replacement
• mounting hardware included: No
• material: Cast Iron
• placement on vehicle: Front
• california prop 65 warning: Warning, Nickel And Chromium Which Are Known To The State Of California To Cause Cancer And Birth Defects Or Other Reproductive Harm. For More Information Go To Www.p65warnings.ca.gov
• item: Tracy Corvette 11572
• type: Engine Block

general engineblocksam:

• category: Auto Parts > Car Truck Accessories > Engines > Blocks

offer engineblocksam:

• in stock #: 2
• best offers: true
• availability: in stock
• prices: $1100.00–$2499.00
• item condition:
  • Used
  • For parts or not working
• sold #: 13
• started: october 26, 2025
• options: ship-to-home

seller engineblocksam:

• rating: 92.4%
• # reviews: 1160
• city: madison, florida

returns engineblocksam:

• policy: returns accepted
• time: 30 days
• paid by: buyer

shipping engineblocksam:

• class: freight
• service: flat rate freight
• type: fixed

payments engineblocksam:

• credit card: discover
• wallet: google-pay
• other