3904391 CHEVROLET Big Block Rectangle Port Heads Lqqk 396 427

Review CHEVROLET Big Block Chevy Bbc Rectangle Port Heads Lqqk for CHEVY 396 427 1967

The Chevrolet 3904391 is a highly sought-after component for any enthusiast of classic American muscle cars. Specifically, this part is a set of 1967 Big Block Chevy BB Cylinder Heads, more precisely, 396/427 Rectangle Port Heads, marked as LQQK.

These heads are designed to accommodate the powerful Big Block Chevy engines, specifically the 396 cubic inch and the 427 cubic inch variants. The rectangle port design allows for efficient air and fuel intake, which in turn increases the engine's combustion efficiency. This results in enhanced power output, making these heads an excellent choice for those looking to boost the performance of their classic Chevrolet.

The LQQK marking indicates that these heads are of late production, likely from the late 1960s. This means they feature some of the latest design improvements and manufacturing techniques, ensuring they provide optimal performance and reliability.

The 1967 Big Block Chevy BB Cylinder Heads are cast from high-quality aluminum alloy, which not only reduces the engine's weight for improved performance but also provides excellent heat dissipation, essential for maintaining engine temperature during high-performance operation.

The heads come with fully-machined combustion chambers, which are crucial for achieving a proper air-fuel mixture. This, in turn, improves combustion efficiency and power output. The heads also feature fully-machined valve seats, ensuring a tight seal for optimal engine performance and efficiency.

In summary, the Chevrolet 3904391 1967 Big Block Chevy BB Cylinder Heads are an excellent choice for anyone looking to boost the performance of their classic Chevrolet. The rectangle port design, late-production LQQK marking, high-quality aluminum alloy construction, and fully-machined combustion chambers and valve seats make these heads an excellent investment for any Big Block Chevy enthusiast.

1. Powerful engine: The 396/427 cubic inch V8 engine is known for its power and torque, making it a popular choice for muscle cars and hot rods.

2. Unique styling: The 1967 Chevrolet has a classic muscle car look with its long hood, short deck, and wide body.

3. Customizable: The engine and transmission can be easily swapped out, allowing for customization to fit your specific needs and preferences.

4. Collectible value: As a classic muscle car, this model has the potential to increase in value over time, making it a worthwhile investment for collectors.

1. High maintenance costs: Classic muscle cars can be expensive to maintain, as parts may be hard to find or expensive to replace.

2. Limited practicality: These cars are not known for their fuel efficiency or everyday practicality, as they are primarily designed for performance.

3. Insurance costs: Classic muscle cars can be expensive to insure due to their high value and the increased risk of accidents.

The 1967 Chevrolet Big Block Chevy BB 396/427 with rectangle port heads (Model Number: 3904391) is a powerful and collectible muscle car that offers a unique driving experience. However, it comes with high maintenance costs, limited practicality, and expensive insurance. If you are a collector or a performance enthusiast who is willing to invest in the upkeep and insurance, this car could be a great addition to your collection. If you are looking for a daily driver or a car with lower maintenance costs, you may want to consider other options.

Details:

Heads are fresh and ready to bolt on, just check springs your cam. Shipping is for the lower 48 states. Heads have a little port work and its pretty nice. Look at pics.

Nice pair of 3904391 heads dated h-1-6 and i-20. No repeats, I did pressure check and they pasted a-OK.

specifications engineblocksam:

• for models: 396, 427
• for makes: Chevy
• for years: 1967
• brand: Chevrolet
• mpn: 3904391
• type: Engine Block
• vintage part: Yes

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• type: fixed
• class: economy
• transit: 4-9 days
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general engineblocksam:

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

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• policy: no returns

seller engineblocksam:

• rating: 98.4%
• city: grants pass, oregon
• # reviews: 1313

offer engineblocksam:

• prices: $1495.00–$4499.99
• item condition:
  • Used
  • Remanufactured
  • New
• started: november 12, 2024
• availability: in stock
• best offers: true
• sold #: 25
• options: ship-to-home
• in stock #: 5