fits model: 360, 400. make: Dodge, Plymouth. year: 1974-85.

( Brand: Holley ), ( Manufacturer Part Number: R-7871A ), ( Type: Carburetor )
The Holley R-7871A 2BBL Squarebore Carburetor is a high-performance upgrade for 1974-1981 Dodge and Plymouth vehicles equipped with the 360 and 400 CI 8-cylinder engines.engine. This carburetor is specifically designed to deliver exceptional power and efficiency, making it an ideal choice for muscle cars, hot rods, and restoration projects. In this detailed description, we will discuss its key features, benefits, and applications.
Features:1. Double Pumper Design: The Holley R-7871A comes with a proven double pumper design that provides an ample fuel supply for large displacement engines. Its unique design ensures even fuel distribution, optimal idle quality, and improved throttle response.
2. Squarebore Design: Squarebore carburetors deliver more air and fuel to the engine, leading to increased horsepower and torque. The Holley R-7871A's squarebore design is particularly well-suited for the high-performance needs of muscle cars and hot rods.
3. Modular Design: Holley's modular design makes it easy to customize the carburetor according to individual preferences. Users can select from different base pitman arm sets, primary jet sizes, emulsion tube lengths, and more to fine-tune their engine setup.
4. Positive Air Pressure System (PAS): The built-in PAS prevents vacuum leaks and maintains consistent air pressure, resulting in better fuel atomization and improved engine performance.
5. Cold Air Induction: The R-7871A's cold air induction system draws cooler air from the outer edges of the air cleaner element, which enhances combustion efficiency and delivers more power.
6. Improved Emissions Compliance: This carburetor meets the emission requirements for 1975-1977 applications and can be used with catalytic converters and oxygen sensors.
Benefits:- Improved power and torque output
- Optimal idle quality and throttle response
- Enhanced air and fuel distribution for large displacement engines
- Customizable modular design to fit various engine setups
- Compatibility with catalytic converters and oxygen sensors
- Proven double pumper design for superior fuel delivery
Applications: Holley R-7871A 2BBL Carburetor is designed for use with 1974-1981 Dodge and Plymouth muscle cars and hot rods, including:- Dodge Charger and Charger Daytona
- Dodge Magnum
- Plymouth Duster
- Plymouth Fury
- Plymouth Road Runner
- Other 1974-1981 Dodge and Plymouth vehicles with 360 and 400 CI 8-cylinder engines.
Conclusion:The Holley R-7871A 2BBL Squarebore Carburetor provides a powerful and efficient solution for Dodge and Plymouth muscle cars and hot rods with 360 and 400 CI 8-cylinder engines. Its distinctive double pumper design, squarebore construction, and customizable modular features make it a popular choice among engine enthusiasts and performance tuners. If you are looking to upgrade your classic Dodge or Plymouth and transform it into a high-performance machine, the Holley R-7871A 2BBL Carburetor is an excellent choice.
When it comes to upgrading an automotive engine's performance, selecting the right carburetor can significantly enhance power and fuel economy. Holley Carburetors have been a reliable and high-performing option for many enthusiasts. One such model, the Holley R-7871A 2BL Carburetor, has gained popularity among wheels enthusiasts for its impressive features for 1974-1985 Dodge Plymouth 360 and 400ci 8-cylinder engines. In this analysis, we'll explore the pros and cons of purchasing this carburetor to help you make an informed decision.
Pros:1. Improved Fuel Efficiency: The Holley R-7871A 2BL Carburetor features a secondary metering system that ensures optimal fuel delivery at all engine speeds. This results in improved fuel efficiency compared to stock carburetors, ultimately saving you money on gas and reducing emissions.
2. Enhanced Power: This carburetor provides a more significant air/fuel mixture, which leads to a considerable power increase. In fact, many car enthusiasts report a boost of up to 20 horsepower or more. This improvement can be noticeable, especially during takeoff and highway driving.
3. Superior Idle Quality: The Holley R-7871A 2BL Carburetor's carburetor adjustment screws allow for more precise control, ultimately resulting in a smooth and stable idle. This can be particularly beneficial for drivers who spend much time in stop-and-go traffic or those concerned with emissions.
4. Wide Compatibility: This carburetor is compatible with a wide range of applications, including both automotive and marine applications with little or no modification. Additionally, it can be adapted to work with other engines by using available Holley fuel system kits, providing an excellent opportunity to upgrade multiple vehicles.
5. Easy Installation: Installing a Holley R-7871A 2BL Carburetor typically requires minimal modification to the engine bay, making the process convenient and time-efficient. Moreover, a substantial number of how-to guides and tutorials are available online to aid in a smooth installation process.
Cons:1. Higher Initial Cost: The Holley R-7871A 2BL Carburetor represents a more substantial financial investment compared to stock carburetors. However, its features and performance upgrades often justify the expense for enthusiasts seeking peak power and fuel efficiency.
2. Complex Adjustments: While the carburetor offers advanced level of adjustability, complex installation and fine-tuning steps must be taken to optimize the performance of the engine. A qualified mechanic or experienced car enthusiast is recommended for those who prefer a hassle-free installation experience.
3. Increased Maintenance: Holley R-7871A 2BL Carburetor requires occasional maintenance tasks such as replacing gaskets, adjusting idle mixture, and cleaning or rebuilding the float bowls to ensure optimal performance. However, these maintenance efforts provide an opportunity to fine-tune the engine's fuel mixture and create a custom driving experience.
Conclusion:In conclusion, the Holley R-7871A 2BL Carburetor showcases several advantages, including improved fuel efficiency, enhanced power, superior idle quality, wide compatibility, and easy installation. However, it comes with higher initial costs and requires complex adjustments along with increased maintenance. Ultimately, this carburetor caters to enthusiasts who are dedicated to optimizing their 1974-1985 Dodge Plymouth 360 and 400ci 8-cylinder engines' performance, prioritizing power, fuel efficiency, and customization flexibility. For those who are willing to invest their time and resources into mastering its fine adjustments and maintenance requirements, the benefits of this carburetor can be significant and provide years of driving satisfaction.
Recommendation:For individuals seeking to upgrade the fuel system of their 1974-1985 Dodge Plymouth 360 or 400ci 8-cylinder engines to achieve higher power and improved fuel efficiency, the Holley R-7871A 2BL Carburetor is a worthwhile investment. It offers a reliable and proven solution to cater to driving enthusiasts' needs for adjustability, performance, and compatibility. However, thorough research, proper installation, and maintenance are crucial to maximize its potential and ensure a long-lasting and enjoyable driving experience.
Holley R-7871A 2Brl Carburetor 1974-85 Dodge Plymouth 360/400 CI 8Cyl. Needs lots of WD40 and carb cleaner. Also missing the lever that goes over word Holley on top.