MAXPEEDINGRODS K7L9MI Carburetor Carb Quadrajet Vacuum 4BBL 4MV 1904R 650CFM
fits make: Rochester. year: 1980–1989.
( Brand: Maxpeedingrods ), ( Manufacturer Part Number: K7L9MI ), ( Cfm: 650/750 ), ( Choke Type: Electric ), ( Compatible Make: For Chevrolet ), ( Compatible Year: 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 ), ( Drive Type: Electric Choke ), ( Engine: 305 5.0 L / 350 5.7l Engines ), ( Features: Constant-vacuum, Quadrajet ), ( Fitment 1: For Quadrajet 4mv 4 Barrel ), ( Fitment 2: For Chevrolet 1904r 1906r 305 350 Engine 1980-1989 ), ( Fitment Type: Direct Replacement ), ( Items Included: Gasket, Mounting Hardware, O-rings ), ( Manufacturer Warranty: 1 Year ), ( Maximum Flow: Cfm ), ( Mounting Flange Type: Spread Bore ), ( Needle Valve: 3.3 ), ( Note: No Instruction Included ), ( Notice: This Is Aftermarket Replcement Part. ), ( Oe/oem Part Number: 1904r, 1906r, 17066422, 17066425, 17066432, 17066493, 17066553, 17066556, 17066563, 17066605, 17080202, 17080204, 17080207, 17080228, 17080274, 17080282, 17080284, 17081282, 17081283, 17081284, 17081285, 17082230, 17065524, 17067256, 17082280, 17082281, 17082282, 17082283, 17082284, 17083282, 17083283, 17084284, 17067258, 17067266, 17067268, 17084285, 17084288, 17084289, 17067280, 17067284, 17067336, 17068501, 17068503, 17068505, 17068587, 17068590 ), ( Part Type: Intake Fuel System ), ( Type: Carburetor ), ( Venturi Diameter: 31.7mm )
Review MAXPEEDINGRODS Carburetor Carb For Rochester Quadrajet 4mv Vacuum 650cfm fits 1980–1989
The Maxxeom K7L9MI 4-barrel carburetor is a high-performance replacement option for original Rochester Quadrajet 4MV 1904R vacuum secondary carburetors used in select 1980-1989 applications. This carburetor boasts an impressive 650 CFM (cubic feet per minute) airflow rate, making it an excellent choice for those seeking improved engine performance and power.
This carburetor features four venturi barrels, each with a 38mm bore, ensuring optimal fuel delivery for larger engines. It is designed to fit directly into the factory intake manifold, with no need for modifications, making for a straightforward installation process.
The K7L9MI carburetor is also equipped with vacuum secondary technology. This means that it features secondary throttle plates that are controlled by engine vacuum, providing rich fuel mixtures during light throttle applications and lean mixtures under heavy throttle for optimal engine performance and fuel efficiency.
The carburetor body is made from high-quality aluminum, which is both lightweight and durable, contributing to the overall weight reduction of the engine system. Additionally, the carburetor comes with a new gasket kit and hardware for a hassle-free installation.
The Maxxeom K7L9MI 4-barrel carburetor is suitable for a wide range of applications, including automobiles, trucks, and high-performance vehicles. It is designed to deliver consistent performance in various driving conditions, making it an excellent choice for both daily driving and racing applications.
This carburetor is also known for its ease of tuning, allowing enthusiasts to fine-tune their engine's fuel-air mixture to achieve optimal performance. It comes with pre-drilled ports for external vacuum and temperature sensors, allowing for easy installation and customization.
In summary, the Maxxeom K7L9MI 4-barrel carburetor is a high-performance replacement option for original Rochester Quadrajet 4MV 1904R vacuum secondary carburetors. With its impressive 650 CFM airflow rate, four venturi barrels, and vacuum secondary technology, this carburetor offers improved engine performance, power, and fuel efficiency for select 1980-1989 applications. Its lightweight and durable aluminum body, ease of tuning, and straightforward installation process make it a popular choice among enthusiasts and professionals alike.
The MaxxiFlow K7L9MI 4-barrel carburetor from Maxxecar, also known as Maxpeedingrods, is a popular aftermarket alternative to the original Rochester Quadrajet 4MV 1904R vacuum secondary carburetor used in various 1980-1989 American cars. Let's examine the key pros and cons of using this carburetor in place of the stock Quadrajet.
Pros:1. Improved Performance: The MaxxiFlow K7L9MI carburetor is known for providing better fuel mixture and airflow, leading to improved engine performance. It results in a more responsive throttle and increased horsepower.
2. Better Idle Stability: This carburetor offers improved idle stability, which is crucial for a smooth driving experience. It also helps in preventing stalling and rough idling.
3. Improved Fuel Economy: Although not a primary concern for performance enthusiasts, the MaxxiFlow K7L9MI carburetor can provide minor improvements in fuel economy due to its more efficient fuel mixture.
4. Customizability: The MaxxiFlow K7L9MI carburetor offers a range of customization options, including jet kit sizes, air bleed screws, and various accessories like electric choke and fuel pressure regulators.
5. Affordability: Compared to other high-performance aftermarket carburetors, the MaxxiFlow K7L9MI is a relatively affordable option.
Cons:1. Complex Installation: Installing the MaxxiFlow K7L9MI carburetor requires a significant amount of time and effort, as it involves removing the factory intake manifold, fuel lines, and other components.
2. Potential Tuning: Properly tuning the MaxxiFlow K7L9MI carburetor for optimal performance may require some expertise and time. It involves adjusting various components like jets, idle mixture screws, and air bleed screws.
3. Potential Vibration: Some users have reported increased engine vibration when using the MaxxiFlow K7L9MI carburetor, which can be due to improper installation or tuning.
4. Potential Fuel Leaks: Installing the MaxxiFlow K7L9MI carburetor may require new fuel lines and gaskets, as old seals and gaskets might not provide a proper seal.
In conclusion, the MaxxiFlow K7L9MI 4-barrel carburetor offers significant performance improvements, better idle stability, and customizability over the stock Rochester Quadrajet 4MV 1904R vacuum secondary carburetor. However, it comes with a complex installation process, potential tuning requirements, and the possibility of increased engine vibration and fuel leaks.
If you are an experienced DIYer or a performance enthusiast who is willing to invest time and effort into the installation and tuning process, the MaxxiFlow K7L9MI carburetor can be an excellent upgrade for your 1980-1989 American car. Alternatively, if you prefer a more straightforward installation and are not concerned with significant performance gains, you might want to consider sticking with the stock carburetor.
Details:
Control the speed of engine under stable condition, effective operation. Compact size, less fuel consumption, energy saving and economical. Let your vehicles speed up in a short time, better driving experience.guaranteed Fitment.
1904R, 1906R, 17066422 17066425 17066432 17066493 17066553 17066556 17066563 17066605 17080202 17080204 17080207, 17080228 17080274 17080282 17080284 17081282 17081283 17081284 17081285 17082230 17065524 17067256, 17082280 17082281 17082282 17082283 17082284 17083282 17083283 17084284 17067258 17067266 17067268, 17084285 17084288 17084289 17067280 17067284 17067336 17068501 17068503 17068505 17068587 17068590. Improve the structure during manufacturing process, high accuracy. 4BBL Carburetor Carb For Rochester Quadrajet 4MV 1904R Vacuum 650 cfm 1980 - 1989. Aftermarket brand new, ensure superior and reliable quality.
As shown in the picture. Replaces Part Numbers. 5.0L 5.7L Engine 1980 - 1989. High hardness and corrosion resistance, longer usage life.
Drive Type: Electric Choke. Type: Carburetor, Choke Electric Choke, Barrel Count: 4, Auxiliary Venturi: 7mm, Venturi Diameter: 31.7mm, Main jets: 190, Air correction Idle 120, Needle Valve: 3.3, cfm : 650/750, Placement on Vehicle: Front, Fitment Direct Replacement. Always the correct part.
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part #: k7l9mi prices
- $179.10-$447.25
specifications carbcoon:
- for makes: Rochester
- for years: 1980-1989
- brand: Maxpeedingrods
- mpn: K7l9mi
- cfm: 650/750
- choke type: Electric
- compatible make: For Chevrolet
- compatible year: 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989
- drive type: Electric Choke
- engine: 305 5.0 L / 350 5.7l Engines
- features: Constant-vacuum, Quadrajet
- fitment 1: For Quadrajet 4mv 4 Barrel
- fitment 2: For Chevrolet 1904r 1906r 305 350 Engine 1980-1989
- fitment type: Direct Replacement
- items included: Gasket, Mounting Hardware, O-rings
- manufacturer warranty: 1 Year
- maximum flow: Cfm
- mounting flange type: Spread Bore
- needle valve: 3.3
- note: No Instruction Included
- notice: This Is Aftermarket Replcement Part.
- oe/oem part number: 1904r, 1906r, 17066422, 17066425, 17066432, 17066493, 17066553, 17066556, 17066563, 17066605, 17080202, 17080204, 17080207, 17080228, 17080274, 17080282, 17080284, 17081282, 17081283, 17081284, 17081285, 17082230, 17065524, 17067256, 17082280, 17082281, 17082282, 17082283, 17082284, 17083282, 17083283, 17084284, 17067258, 17067266, 17067268, 17084285, 17084288, 17084289, 17067280, 17067284, 17067336, 17068501, 17068503, 17068505, 17068587, 17068590
- part type: Intake Fuel System
- type: Carburetor
- venturi diameter: 31.7mm
general carbcoon:
- Car Truck Parts Accessories > Air Fuel Delivery > Carburetors
- condition: New
returns carbcoon:
- time: 30 Days
- policy: Returns Accepted
- paid by: Seller
shipping carbcoon:
- cost: $0.00
- class: Standard
- transit: 3-7 Days
- carrier: FedEx
- type: Fixed
- service: FedEx Ground or FedEx Home Delivery
payments carbcoon:
- wallet: Paypal
- credit card: Diners-club
- other
offer carbcoon:
- best offers: True
- availability: In Stock
- started: June 4, 2025
- options: Ship-to-home
- sold: 0
seller carbcoon:
- city: Dayton, New Jersey
- rating: 98.5%
- # reviews: 939
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