3999290 CHEVROLET Standard Big Block 396 Chevy Chevelle

Review CHEVROLET Standard Bore 402 Chevy Big Block #3999290 for CHEVY CHEVELLE 396 1971–2012

Introducing the iconic Chevrolet 1971 Chevelle SS with the standard 396/402 Big Block engine, represented by the service part number 3999290. This engine is a powerful and iconic piece of automotive history, perfect for those seeking to restore or enhance their classic Chevelle.

The 396 cubic inch V8 engine, also known as the W-Motor, was Chevrolet's answer to muscle car enthusiasts' demands for power. The 402 designation refers to the engine's displacement, meaning it has a total volume of 402 cubic inches. This engine was renowned for its torque and horsepower, making it a favorite among performance enthusiasts.

The 1971 Chevelle SS with the 396/402 Big Block engine came standard with a 4-barrel carburetor, which provided ample air and fuel mixture for the engine to produce impressive power. The engine was mated to a heavy-duty Muncie M21 4-speed manual transmission, allowing for smooth and precise gear changes.

The engine block is made of cast iron, a material known for its durability and ability to withstand high temperatures and pressures. The aluminum cylinder heads feature a hemispherical combustion chamber design, which improves combustion efficiency and power output. The engine also features a hydraulic camshaft, which allows for precise valve timing and improved engine performance.

The 3999290 part includes other essential components, such as the intake manifold, cylinder heads, pistons, connecting rods, crankshaft, and various gaskets and seals. These components are essential for the proper functioning of the engine and are often the first to wear out during regular use or during restoration projects.

The 1971 Chevelle SS with the 396/402 Big Block engine was a force to be reckoned with, capable of producing over 375 horsepower and 440 lb-ft of torque. This engine is not only a necessary component for restoring a classic Chevelle to its original glory but also a desirable upgrade for those seeking to enhance the performance of their muscle car.

In summary, the Chevrolet 3999290 standard 396/402 Big Block engine is a powerful and iconic piece of automotive history. It is a must-have for those seeking to restore or enhance their classic 1971 Chevelle SS. This engine offers impressive power and torque, making it a favorite among muscle car enthusiasts. With its durability and ability to withstand high temperatures and pressures, the 396/402 Big Block engine is an essential component for any Chevelle restoration project.

Buying a 1971 Chevrolet Chevelle with the engine identification number 3999290, which is a standard 396 402 big block V8, can be an exciting experience for car enthusiasts. Here are some potential pros and cons to help you make an informed decision:

1. Power and Performance: The big block 396 V8 engine is known for its power and torque. With 402 horsepower, this Chevelle is sure to provide an exhilarating driving experience.

2. Collectibility: The 1971 Chevelle SS is a classic muscle car, and the 396 engine option is highly sought after by collectors. It's a good investment for those interested in collecting.

3. Customizability: The Chevelle's body style offers a lot of room for customization, making it a popular choice for hot rodders and restorers.

4. Reliability: The 396 engine is known for its durability and reliability, making it a good choice for daily drivers as well.

1. Fuel Efficiency: With a large V8 engine comes less than stellar fuel economy. Expect to fill up more frequently than with a smaller engine.

2. Maintenance Costs: A high-performance engine like the 396 V8 requires more frequent and expensive maintenance compared to a standard engine.

3. Insurance Costs: The high horsepower and collectible value of the Chevelle may result in higher insurance premiums.

4. Rarity: Finding replacement parts for a 1971 Chevelle with a 396 engine can be challenging and expensive.

The 1971 Chevelle with a 396 402 big block V8 engine offers a unique blend of power, performance, and collectibility. However, it also comes with higher maintenance and insurance costs, as well as less than ideal fuel economy. Ultimately, whether or not this car is a good fit for you depends on your personal preferences, budget, and intended use.

If you are looking for a powerful, collectible muscle car and have the budget for the higher maintenance costs, then this 1971 Chevelle with a 396 402 big block V8 engine is an excellent choice. However, if you are on a tighter budget or prefer a more practical, everyday car, then you may want to consider other options.

Details:

Guy had all nice stuff in doors and his junk was outside. According to a son in law it was supposed be builder core block. My dad got this 396-402 out of an estate.

specifications engineblocksam:

• for models: 396, Chevelle
• for makes: Chevy
• for years: 1971–2012
• brand: Chevrolet
• mpn: 3999290
• type: Engine Block
• manufacturer warranty: No
• material: Cast Iron
• vintage part: Yes
• country of origin: United States

general engineblocksam:

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

offer engineblocksam:

• prices: $250.00–$1700.00
• item condition:
  • For parts or not working
  • Used
• options: ship-to-home
• started: may 14, 2026
• sold #: 7
• availability: in stock
• in stock #: 5

seller engineblocksam:

• # reviews: 124
• rating: 100.0%
• city: arcade, new york

payments engineblocksam:

• other
• wallet: apple-pay
• credit card: visa

shipping engineblocksam:

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

returns engineblocksam:

• policy: no returns