fits model: 427, 396. make: Chevy. year: 1967.

( Manufacturer Part Number: 3919840 ), ( Part Type: Head Block )
The BBC HEADS 840 427 Block 396 Big Chevy Rectangle 23-7, with part number 3919840, is an exceptional engine block for classic Chevrolet vehicles, specifically those from 1967. This block is designed for Big Chevy engines and is known for its robustness and reliability.
The block is constructed from high-quality materials, ensuring durability and longevity. It features a 427 cubic inch displacement, which translates to ample power and torque for your vehicle. The 840 designation refers to the bore diameter, which in this case is 4.00 inches, providing a generous combustion chamber for improved engine performance.
This block is specifically engineered for Port E-23-7 applications, ensuring a perfect fit for your classic Chevrolet. It is a rectangle block, a design that provides additional strength and rigidity to the engine, further enhancing its performance and reliability.
The BBC HEADS 840 427 Block 396 Big Chevy Rectangle 23-7 is a great choice for enthusiasts looking to upgrade their classic Chevrolet's engine. Its combination of power, durability, and reliability makes it an excellent investment for your beloved vehicle, promising smooth and powerful performances on the road.
Pros of buying a 3919840 BBC Heads 840 427 block for a 1967 Big Chevy:1. High Performance: The BBC (Big Block Chevy) engine is known for its power and reliability. The 427 cubic inch size provides ample displacement, resulting in substantial horsepower and torque.
2. Wide Availability of Parts: Due to its popularity and longevity, parts for the BBC engine are widely available, making maintenance and repair relatively easy and cost-effective.
3. Compatibility: The BBC 427 block is compatible with various cylinder heads, intake manifolds, and other engine components, giving you flexibility in customizing your engine build.
4. High Resale Value: As a sought-after engine, a BBC 427 block can maintain or even increase its value, making it a good investment for enthusiasts.
Cons of buying a 3919840 BBC Heads 840 427 block for a 1967 Big Chevy:1. Size and Space: The BBC 427 block is larger than the standard small-block Chevy, which might require modifications to the engine bay, exhaust, and other components to fit properly.
2. Cost: While the BBC 427 block may be an excellent investment, the initial cost of purchasing a block and completing the engine build can be expensive compared to a stock engine.
3. Complexity: Building a BBC engine can be more complex than assembling a smaller-displacement engine due to the numerous components involved and the need for precise engine balancing and assembly techniques.
Conclusion:The 3919840 BBC Heads 847 427 block for a 1967 Big Chevy offers high performance, wide availability of parts, and the potential for a good resale value. However, its larger size and increased cost should be considered, as well as the complexity involved in building a BBC engine. Ultimately, the decision to purchase this block depends on your budget, goals, and the specific requirements of your vehicle.
Recommendation:If you're looking for substantial power, enjoy tinkering with your car, and have the resources to invest in a BBC 427 block, it could be an excellent choice for your 1967 Big Chevy. However, consider starting with smaller engine modifications to gauge your interest and capabilities before committing to a full BBC engine build.
These are fresh and ready to bolt on with new valves, springs, retainers, keepers, seals and a complete valve job. Exhaust ports are factory and intake ports are polished for better performance.
These early heads are rare and hard to find. Not over milled with plenty of material on deck side. There are no cracks or repairs.
All threaded holes checked out good. 1967 big block Chevy bbc rectangle port heads e 23 7 very nice pair of matching heads with early 1967 date and no threaded hole for temperature sensor.