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  3. HILBORN 331-CH

HILBORN Big Block Mechanical Fuel Injection 331ch 383

fits model: 440. make: Mopar.

331-ch Hilborn 331-ch- Big Block Mopar Mechanical Fuel Injection 383 440

( Brand: Hilborn ), ( Part Type: Fuel Block ), ( Manufacturer Part Number: 331-CH- ), ( Placement On Vehicle: Front ), ( Performance Part: Yes )

Review HILBORN 331ch Big Block Mopar Mechanical Fuel Injection 383 fits 440

The Hilborn Injection Systems 331-CH Big Block Mopar Mechanical Fuel Injection system is a high-performance solution designed for 383 and 440 cubic inch Mopar engines. This fuel injection system is a direct replacement for carbureted applications and offers numerous benefits in terms of power, drivability, and efficiency.

The 331-CH system utilizes a unique mechanical design, which means there are no electronic sensors or complex wiring harnesses to deal with. Instead, it relies on a series of mechanical linkages and pressure regulators to control fuel delivery. This design not only eliminates the need for expensive and delicate electronic components but also provides a more consistent and reliable fuel delivery compared to traditional carburetors.

The fuel injectors in this system are precision-machined and designed to deliver a precise and controlled amount of fuel to the engine. Each injector is individually adjusted and calibrated to ensure optimal performance and efficiency. The injectors are also designed to be hard anodized, which provides superior durability and resistance to corrosion.

The fuel pressure regulator in the 331-CH system is adjustable, allowing you to fine-tune fuel pressure to your specific engine and performance requirements. The regulator is also designed to be self-compensating, which means it adjusts itself in response to changing engine conditions, ensuring optimal fuel delivery at all times.

The fuel rail in this system is CNC-machined from 6061-T6 aluminum, which provides excellent strength and rigidity. The rail is also designed to accommodate multiple fuel pressure regulator options, allowing you to customize the system to your specific engine and performance requirements.

The 331-CH Big Block Mopar Mechanical Fuel Injection system includes all necessary components to complete the installation, including fuel rails, injectors, regulator, mounting hardware, and wiring harness. The system is also compatible with a wide range of fuel system accessories, such as fuel pressure gauges and fuel pumps, allowing you to further customize the system to your specific needs.

Overall, the Hilborn Injection Systems 331-CH Big Block Mopar Mechanical Fuel Injection system is a high-performance and reliable solution for Mopar enthusiasts looking to upgrade from traditional carburetors. Its mechanical design offers superior durability, consistency, and reliability, while its adjustable fuel pressure regulator and compatibility with a wide range of accessories allow for customization to specific engine and performance requirements.

The Hilborn 331-CH Big Block Mopar Mechanical Fuel Injection system is a popular choice for Mopar enthusiasts looking to upgrade their 383 or 440 engines with electronic fuel injection. Here are some pros and cons to help you make an informed decision:

Pros:

1. Improved fuel efficiency: Mechanical fuel injection systems, like the Hilborn 331-CH, can provide better fuel atomization and combustion efficiency compared to carburetors. This can lead to improved fuel economy and reduced emissions.

2. Consistent power delivery: Mechanical fuel injection systems offer consistent power delivery throughout the RPM range. This can be especially beneficial for high-performance applications where consistent power is crucial.

3. Easy tuning: The Hilborn 331-CH system can be easily tuned using adjustable fuel pressure regulators and idle mixture adjustments. This allows for fine-tuning of the fuel system to optimize performance and fuel efficiency.

4. Improved drivability: Mechanical fuel injection systems offer improved throttle response and drivability compared to carburetors. This can make the vehicle feel more responsive and easier to drive, especially in stop-and-go traffic.

5. Reliability: Mechanical fuel injection systems are known for their reliability and durability. They have fewer moving parts than carburetors and are less prone to failures due to vacuum leaks or other issues.

Cons:

1. Cost: The Hilborn 331-CH system is more expensive than a carburetor setup. The cost of the fuel injection system, as well as the cost of any necessary modifications to the engine and wiring harness, can add up.

2. Complexity: Mechanical fuel injection systems are more complex than carburetors. They require more maintenance, such as regular fuel filter changes and fuel pressure regulation checks.

3. Installation: Installing a mechanical fuel injection system can be a complex and time-consuming process. It requires experienced technicians and a significant investment of time and resources.

4. Limited compatibility: The Hilborn 331-CH system is designed for specific Mopar applications. It may not be compatible with all 383 or 440 engines without modifications.

5. Limited aftermarket support: There is less aftermarket support for mechanical fuel injection systems compared to carburetors. This can make it more difficult to find replacement parts or expertise if needed.

Conclusion:

The Hilborn 331-CH Big Block Mopar Mechanical Fuel Injection system offers several advantages over carburetors, including improved fuel efficiency, consistent power delivery, ease of tuning, and improved drivability. However, it also comes with some disadvantages, such as cost, complexity, installation challenges, limited compatibility, and limited aftermarket support.

If you are looking for a high-performance fuel system for your Mopar engine and are willing to invest the time, money, and resources required for installation and maintenance, then the Hilborn 331-CH system may be a good choice for you. However, if you are on a budget or prefer a simpler and more cost-effective solution, then a carburetor may be a better option. Ultimately, the decision comes down to your specific needs, preferences, and resources.

part # 331-ch price

  • $3650.00

specifications fuelperforma:

  • for models: 440
  • for makes: Mopar
  • brand: Hilborn
  • part type: Fuel Block
  • manufacturer part number: 331-CH-
  • placement on vehicle: Front
  • performance part: Yes

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  • # reviews: 1162
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  • sold: 0
  • options: Ship-to-home
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  • quantity: 1
  • availability: In Stock
  • started: December 22, 2025

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  • cost: $79.87
  • type: Calculated
  • service: USPS Ground Advantage
  • transit: 5-14 Days
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  • class: Standard

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general fuelperforma:

  • Auto Permance Parts > Fuel Systems > Fuel Injection Pumps
  • condition: Used
for models: 440, for makes: mopar, part type: fuel block, placement on vehicle: front, performance part: yes,
category: auto parts > fuel systems > fuel injection pumps, sku: 7810433707272752,

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1 offer $3650.00 USD
  • Offer #1: $3650.00 price + $72.75 delivery = $3722.75* total. HAVE NOT TESTED. HILBORN INJECTOR PART.+$72.75 shipping