fits model: 427, 396. make: Chevy.

( Manufacturer Part Number: 3919840 ), ( Part Type: Head Block )
The product in question is a 1968-1969 Big 840 Chevy engine block, specifically modeled after the 1968 427 396 A-10-8 and the 1969 rectangle 10-8. This engine block is designed to house a powerful 427 cubic inch engine, perfect for those seeking a high-performance upgrade for their 1968 or 1969 Chevrolet vehicle.
The block is made from a sturdy 3919840 casting, ensuring durability and strength. It features the coveted Big 840 design, which includes a large water pump, heavy-duty cylinder heads, and enhanced oiling system for improved engine performance and longevity.
The cylinder heads of this block are from the 1968 Port Head, known for their efficient combustion chambers and improved airflow. The 1969 Rectangle 10-8 engine block adds an additional layer of strength and performance, with its rectangular main bearing caps and robust main web.
This engine block is compatible with the A-10-8 intake manifold, which allows for a smooth airflow into the engine, enhancing power and efficiency. The block is also ready to accommodate a 10-8 transmission, ensuring a seamless fit and operation.
In summary, this 1968-1969 Big 840 Chevy engine block is a high-quality, high-performance upgrade for your 427 cubic inch engine. Its sturdy construction, powerful design, and compatibility with popular aftermarket components make it an excellent choice for those seeking to boost the performance of their classic Chevrolet.
Pros of buying a 1968-1969 Big 840 Chevy with a 68 port head, 69 rectangle 10-8 391/9840 block, 427 cubic inch engine, and A-10-8 transmission:1. Power and Performance: The 427 cubic inch engine is known for its power and performance, making this car a great choice for those who enjoy high-speed driving.
2. Rare and Collectible: The Big 840 Chevy is a rare and collectible model, which can increase its value over time.
3. Customizability: With its 68 port head and 69 rectangle 10-8 block, this car can be easily modified to fit your specific needs and preferences.
4. Durability: The A-10-8 transmission is known for its durability and reliability, which can save you money on maintenance and repairs in the long run.
Cons of buying a 1968-1969 Big 840 Chevy with a 68 port head, 69 rectangle 10-8 391/9840 block, 427 cubic inch engine, and A-10-8 transmission:1. High Cost: The cost of restoring and maintaining this car can be high due to its rarity and the need for specialized parts.
2. Fuel Efficiency: The 427 cubic inch engine is not known for its fuel efficiency, which can be a drawback for those who prioritize fuel economy.
3. Limited Availability of Parts: Due to the car's age and rarity, parts may be difficult to find and expensive to purchase.
Conclusion:The 1968-1969 Big 840 Chevy with a 68 port head, 69 rectangle 10-8 391/9840 block, 427 cubic inch engine, and A-10-8 transmission is a powerful and collectible car that can provide hours of enjoyment for enthusiasts. However, its high cost, limited fuel efficiency, and potential difficulties in finding parts should be considered before making a purchase. If you have the budget and are willing to invest in the restoration and maintenance of this car, it can be a great addition to your collection.
Recommendation:If you are interested in purchasing this car, it is recommended that you conduct a thorough inspection before making a decision. This will help you identify any potential issues and ensure that you are making an informed purchase. Additionally, research the cost of restoring and maintaining the car, as well as the availability and cost of parts. This will help you determine if the car is a good investment for you. It's also recommended to consult with a professional mechanic or restoration expert to get an expert opinion.
This rectangle port head has no port that has been ported or polished, intake or exhaust ports. No gasket matching ever. Dated a casting that has been cleaned and nagged and checked out OK. Threads in all holes are all great.