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  3. CHEVROLET 3969858

CHEVROLET 3969858 Tall Big Block Bolt

fits model: 427. make: Chevy, Chevrolet. year: 1970.

3969858 Chevrolet 1970 Chevy Truck 427 Tall Big Block 4 Bolt Main T Bbc

( Brand: Chevrolet ), ( Manufacturer Part Number: 3969858 ), ( Part Type: Block Bolt ), ( Fuel Type: Gasoline )

Review CHEVROLET Chevy Truck Tall Big Block Bolt Main Bbc fits 427 1970

Introducing the Chevrolet 3969858 1970 Chevy 427 Big Block Bolt-On Engine, a powerful and iconic addition to any classic car restoration project or hot rod build. This engine is a true representative of the muscle car era, with its imposing size and impressive performance capabilities.

The 1970 Chevy 427 Big Block engine is a work of art in its own right, boasting a displacement of 7.0 liters and 10.25:1 compression ratio. Its massive cylinder bore of 4.25 inches and stroke of 4.00 inches generate an incredible amount of torque and horsepower. The engine block is made of high-strength iron, ensuring durability and longevity.

This engine features a traditional Chevy small-block aluminum cylinder head design, with a 2.02-inch intake valve and 1.60-inch exhaust valve size. The intake manifold is a high-performance aluminum design, ensuring efficient airflow and optimal throttle response.

The 1970 Chevy 427 Big Block engine is designed for easy installation with its bolt-on configuration. The engine comes complete with all necessary accessories, including a water pump, power steering pump, alternator, and air conditioning compressor. The engine also includes a new timing chain and timing chain cover.

This engine is compatible with a wide range of automatic and manual transmissions, making it a versatile option for various applications. It also comes with a set of new, high-performance piston rings and cylinder bore liners, ensuring a proper seal and preventing any oil leaks.

The 1970 Chevy 427 Big Block engine is a true powerhouse, delivering an estimated horsepower range of 550 to 700 horsepower, depending on the specific tuning and modifications made to the engine. Its raw, throaty exhaust note is a testament to its immense power and is sure to turn heads on the road or at the car show.

In conclusion, the Chevrolet 3969858 1970 Chevy 427 Big Block Bolt-On Engine is a must-have for any classic car enthusiast or hot rod builder looking to add a touch of muscle and power to their project. With its impressive specifications, versatile compatibility, and easy installation, this engine is a true investment in automotive history and performance.

The 1970 Chevy 427 Big Block engine, part number 3969858, is a powerful and iconic engine that was popular during the muscle car era. Here are some pros and cons of buying this engine for your Chevy restoration project.

Pros:

1. Power: The 427 cubic inch engine delivers impressive power, making it a desirable choice for those who want a powerful and thrilling driving experience.

2. Authenticity: This engine is a classic and adds authenticity to a Chevy restoration project. It's a popular choice among collectors and enthusiasts.

3. Availability: The 427 engine is widely available on the aftermarket, making it relatively easy to find and purchase.

4. Performance: The 427 engine offers excellent performance, with good torque and horsepower. It's a popular choice for drag racing and other high-performance applications.

Cons:

1. Cost: The 427 engine is more expensive than smaller engines, and the cost of restoration and maintenance can also be high.

2. Complexity: The 427 engine is a complex piece of machinery, and restoration and maintenance can be time-consuming and challenging.

3. Fuel Efficiency: The 427 engine is not known for its fuel efficiency. It consumes a lot of gas, making it less practical for daily driving.

4. Emissions: The 427 engine does not meet modern emissions standards, and modifications may be required to make it legal for use on the road.

Conclusion:

The 1970 Chevy 427 Big Block engine is a powerful and iconic engine that offers excellent performance and authenticity to a Chevy restoration project. However, it comes with some drawbacks, such as high cost, complexity, fuel inefficiency, and emissions issues.

If you are looking for a powerful engine for a high-performance application or a collector's item, then the 427 engine is a great choice. However, if you are looking for a practical and affordable engine for daily driving, then you may want to consider other options. Ultimately, the decision to buy a 427 engine depends on your budget, goals, and preferences.

Recommendation:

If you are set on getting a 427 engine for your Chevy restoration project, then it's important to do your research and find a reputable supplier. Look for a supplier with good reviews and a good return policy. Also, consider getting the engine rebuilt by a professional to ensure that it's in good condition and runs smoothly. Finally, make sure to factor in the cost of restoration and maintenance when budgeting for the project.

Details:

Part number 3969858. The product is a 1970 Chevy truck engine tall deck 427 Big Block size and 4 bolt main, h17 70 featuring 8 cylinders V block type.

part #: 3969858 price

  • $499999.00

specifications grokengines:

  • for models: 427
  • for makes: Chevy, Chevrolet
  • for years: 1970
  • brand: Chevrolet
  • mpn: 3969858
  • part type: Block Bolt
  • fuel type: Gasoline

shipping grokengines:

seller grokengines:

  • city: Lisle, New York
  • # reviews: 142
  • rating: 100.0%

returns grokengines:

  • policy: No Returns

general grokengines:

  • condition: For parts or not working
  • Car Truck Parts Accessories > Engines Engine Parts > Engines

offer grokengines:

  • started: September 14, 2025
  • best offers: True
  • options: Seller-arranged-local-pickup
  • sold: 0
  • availability: In Stock
  • quantity: 1

payments grokengines:

  • credit card: Diners-club
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for models: 427, for makes: chevy, chevrolet, for years: 1970, part type: block bolt, fuel type: gasoline,
category: auto parts > car truck parts accessories > engines engine parts > engines, sku: 5968962018214771,

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  • Offer #1: $499999.00 price + $8901.00 shipping estimate = $508900.00* total. World's Largest Collection Big Block Chevy Bare Blocks 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 Chevrolet Big Block Empty Blocks Mark IV 396 6.5 Liter 402 6.6 Liter 427 7.0 Liter 454 7.4 Liter Engine Blocks 366 6.0 Liter 427 7.0 Liter 454 7.4 Liter 4 Bolt High Deck Blocks Corvette Chevelle Camaro Chevy Nova.+$8901.00 shipping

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