FLOWTECH 456457 Headers Block 11110FLT 19641967

( Brand: Flowtech ), ( Type: Exhaust Header ), ( Material: Steel ), ( Manufacturer Part Number: 456457 ), ( Item Height: 16.000 ), ( Item Length: 33.000 ), ( Item Width: 17.000 )

Review FLOWTECH 11110flt Headers Chevy Small Block Sbc fits NOVA 283 327

Introducing the Flowtech 456457 11110FLT Headers for the 1964-1967 Chevrolet Nova with 283 or 327 engine block. These headers are a must-have for any performance enthusiast looking to enhance the power and efficiency of their Nova.

The Flowtech 456457 headers are made from 304L stainless steel, ensuring durability and resistance to corrosion. Each header comes with 11110FLT collector design, which is specifically engineered for a smooth and efficient exhaust flow. The collectors are also designed to fit perfectly with the factory exhaust system, making for an easy and straightforward installation process.

Each header comes equipped with 4-into-1 design, which means that the four exhaust ports from the engine merge into a single pipe before exiting the header. This design not only enhances exhaust flow but also helps to reduce exhaust backpressure, leading to improved engine performance.

These headers also feature rolled edges, which help to prevent exhaust leaks and ensure a proper seal against the exhaust manifold. The rolled edges also provide a smooth transition from the header to the collector, ensuring a smooth exhaust flow.

The Flowtech 456457 headers are a direct replacement for the factory headers, making for an easy installation process. However, it's important to note that the use of a header gasket is recommended for proper sealing and to ensure optimal performance.

In summary, the Flowtech 456457 11110FLT Headers are a high-performance upgrade for the 1964-1967 Chevrolet Nova with 283 or 327 engine block. These headers are made from durable stainless steel, feature a smooth 4-into-1 collector design, and offer improved exhaust flow and reduced backpressure, leading to enhanced engine performance. The easy installation process makes these headers a great choice for any performance enthusiast looking to take their Nova to the next level.

Flowtech 456457 11110FLT headers are aftermarket exhaust headers designed for 1964 to 1967 Chevrolet Novas with 283 or 327 cubic inch blocks. These headers are known for their high-performance design and ability to improve engine breathing, leading to increased horsepower and torque. In this analysis, we will discuss the pros and cons of buying these headers for your Chevy Nova.

1. Enhanced Performance: Flowtech headers are designed to provide better exhaust flow, which results in improved engine performance. They help the engine breathe better, allowing more air and fuel to be burned, resulting in increased horsepower and torque.

2. Improved Fuel Economy: By improving the engine's efficiency, these headers can help improve fuel economy. Although the improvement may not be significant, every little bit helps.

3. Better Throttle Response: Flowtech headers can provide better throttle response, allowing the engine to respond more quickly to accelerator input.

4. Increased Exhaust Flow: The headers are designed to increase exhaust flow, which can help reduce backpressure in the exhaust system. This can lead to better engine performance and improved exhaust gas velocity.

5. Durability: Flowtech headers are made from high-quality materials, such as 304 stainless steel, which ensures their durability and longevity.

1. Cost: Flowtech headers are more expensive than stock headers. The cost of the headers may be a significant investment for some enthusiasts.

2. Installation Complexity: Installing aftermarket headers can be a complex process, especially for those who lack experience with exhaust systems. Professional installation is recommended to ensure proper fitment and function.

3. Fitment: Flowtech headers may not be a perfect fit for every application. It's essential to ensure that the headers are compatible with your specific engine and exhaust system.

4. Loud Exhaust: The headers can produce a louder exhaust note, which may not be desirable for those who prefer a quieter ride.

5. Changing OEM Cats: If you plan on using the headers with the OEM catalytic converters, you may experience a decrease in performance due to the restrictive nature of the cats.

Flowtech 456457 11110FLT headers offer several benefits for Chevy Nova enthusiasts, including improved engine performance, better throttle response, and increased durability. However, they also come with drawbacks, such as a complex installation process, cost, and potential fitment issues. Despite these cons, the performance gains and improved engine efficiency make these headers a worthwhile investment for those who prioritize performance and are willing to tackle the installation process.

If you're looking to improve the performance of your 1964 to 1967 Chevy Nova with a 283 or 327 cubic inch block, Flowtech 456457 11110FLT headers are an excellent choice. However, keep in mind that they come with some installation complexities and a higher price tag. It's recommended to consult with a professional exhaust shop to ensure proper fitment and installation. Additionally, consider the potential impact on fuel economy and exhaust noise before making the purchase.

part # 456457 price

• $275.00

specifications maniheader:

• for models: 283, 327, Nova
• for makes: Chevy
• brand: Flowtech
• type: Exhaust Header
• material: Steel
• manufacturer part number: 456457
• item height: 16.000
• item length: 33.000
• item width: 17.000

general maniheader:

• Car Truck Parts Accessories > Exhaust Emission Systems > Manifolds Headers
• condition: New

seller maniheader:

• # reviews: 321134
• rating: 99.7%

payments maniheader:

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• other
• wallet: Paypal

offer maniheader:

• sold: 0
• availability: In Stock
• quantity: 1
• options: Ship-to-home
• started: February 22, 2026

shipping maniheader:

• type: Fixed
• carrier: FedEx
• transit: 3-5 Days
• cost: $0.00
• service: Economy, FedEx Ground Economy
• class: Economy

returns maniheader:

• paid by: Seller
• time: 30 Days
• policy: Returns Accepted

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