MAXPEEDINGRODS 1RJU39 Carburetor Engines 4BBL 402 1901R

( Brand: Maxpeedingrods ), ( Manufacturer Part Number: 1RJU39 ), ( Choke Air Horn Outer Diameter: 129mm ), ( Choke Type: Mechanical ), ( Drive Type: Mechanical Choke ), ( Features: Constant-vacuum, Quadrajet ), ( Fitment Type: Direct Replacement ), ( Fits: For Quadrajet 4mv 4 Barrel For Chevrolet Engines 327 350 427 454 ), ( Intake Size: 35mm 57.2mm ), ( Items Included: Gasket, Mounting Hardware ), ( Manufacturer Warranty: 2 Year ), ( Material: Alloy ), ( Maximum Flow: Cfm ), ( Mounting Flange Type: Spread Bore ), ( Mounting Stud Measure: 108mm 143mm ), ( Note: No Instruction Included ), ( Notice: This Is Aftermarket Replcement Part ), ( Oe/oem Part Number: 1901r, 1901-gg, 7026202, 7026203, 7026210, 7027202, 7027203, 7027212, 7027123, 7040007, 7040021, 7046904, 7047207, 7047303, 7047305, 7047306, 7047307, 7047316, 7047319, 17054236, 17054709, 170549 ), ( Part Type: Intake Fuel System ), ( Specific: 4 Barrel ), ( Type: Carburetor ), ( Universal Fitment: Yes )

Review MAXPEEDINGRODS Carburetor For Chevy 402 Engines fits 350 327 396 400 427 454 1966–1973

The Maxxecel 1R Juan 4-barrel carburetor, model number 1RJU39, is a high-performance replacement option for various Chevrolet engines produced between 1966 and 1973, including the 350, 327, 396, 400, 402, 427, and 454 engines. This carburetor is designed to deliver optimal engine performance and fuel efficiency.

The 1RJU39 carburetor features a four-barrel design, which allows for a greater air-fuel mixture entering the engine cylinders. This results in increased horsepower and torque, making it an excellent choice for performance enthusiasts or those seeking to improve their vehicle's power output.

This carburetor comes with a 1.72-inch primary bore and a 2.02-inch secondary bore, ensuring a smooth and consistent fuel delivery to the engine. The choke system is designed for easy use and quick response, making cold starts a breeze.

The 1RJU39 carburetor is also equipped with a vacuum secondary system, which allows for improved idle stability and vacuum advance. This system helps to optimize engine performance under various driving conditions, ensuring a smooth and responsive driving experience.

The carburetor's construction is made from high-quality materials, including a robust cast aluminum body and hardened steel components. This ensures durability and longevity, making it a reliable replacement option for your classic Chevrolet engine.

The 1RJU39 carburetor is easy to install, with a bolt-on design that requires minimal modifications to your existing engine setup. It also comes with detailed instructions to guide you through the installation process.

In summary, the Maxxecel 1R Juan 4-barrel carburetor, model number 1RJU39, is a high-performance replacement option for various Chevrolet engines from 1966 to 1973. With its four-barrel design, smooth fuel delivery, vacuum secondary system, and durable construction, it offers improved engine performance, fuel efficiency, and reliability.

The Maximum Motorsports 1R Juan 4-barrel carburetor is a popular choice for those looking to upgrade the fuel delivery system in their Chevy engines (350, 327, 396, 400, 402, 427, 454) from 1966 to 1973. Here are some pros and cons to help you make an informed decision:

1. Improved Performance: The 1R Juan carburetor offers better fuel flow and atomization compared to the original carburetors. This results in improved engine performance, including increased horsepower and torque.

2. Easy Installation: The 1R Juan carburetor is designed to be a direct replacement for the factory carburetors. This means that the installation process is relatively simple, requiring minimal modification to the engine or intake manifold.

3. Better Fuel Economy: The improved fuel flow and atomization can lead to better fuel economy, as the engine is able to more efficiently use the fuel.

4. Adjustability: The 1R Juan carburetor offers a greater degree of adjustability, allowing tuning for various driving conditions and engine modifications.

5. Durability: The 1R Juan carburetor is known for its durability and reliability, making it a popular choice for high-performance applications.

1. Cost: The 1R Juan carburetor is more expensive than the factory carburetors. This may be a consideration for those on a tight budget.

2. Complexity: The 1R Juan carburetor offers a greater degree of adjustability, which can be a double-edged sword. Those who are not familiar with carburetor tuning may find the process confusing.

3. Fuel System Compatibility: The 1R Juan carburetor may not be compatible with all fuel systems. It is important to ensure that the fuel system can support the increased fuel flow and pressure requirements of the carburetor.

4. Air Cleaner Compatibility: The 1R Juan carburetor may not be compatible with all air cleaner designs. It is important to ensure that the air cleaner can be modified or replaced to work with the new carburetor.

The Maximum Motorsports 1R Juan 4-barrel carburetor offers significant performance improvements for Chevy engines from 1966 to 1973. While it comes with some additional complexity and cost, the benefits often outweigh the drawbacks. Those considering this upgrade should ensure that their fuel system and air cleaner are compatible, and should be prepared to invest time and effort into tuning the carburetor for optimal performance.

If you are looking for improved performance and are willing to invest the time and effort into tuning the carburetor, the Maximum Motorsports 1R Juan 4-barrel carburetor is a solid choice. However, if you are on a tight budget or are not comfortable with carburetor tuning, you may want to consider other options. Additionally, it is important to ensure that your fuel system and air cleaner are compatible before making a purchase.

Details:

Application: for Chevrolet 350 327 396 400 402 427 454 Engines 1966-1973. Cruse 4BBL Carburetor for Chevy 350 327 396 400 402 427 454 Engines 1966-1973 1901R. Choke Type: Mechanical. For GMC 327 350 396 402 454 Engines 1967-1973.

Material: Zinc Alloy. Part Number: 1901R,1901-GG. One Year Unlimited Mileage Quality Guarantee. Our representatives will provide you with detailed instructions on how to proceed.

Boxes, APO/FPO addresses, or Military Mail Boxes.

part #: 1rju39 prices

• $130.00-$211.90

specifications carbcoon:

• for models: 350, 327, 396, 400, 427, 454
• for makes: Chevy
• for years: 1966-1973
• brand: Maxpeedingrods
• mpn: 1rju39
• choke air horn outer diameter: 129mm
• choke type: Mechanical
• drive type: Mechanical Choke
• features: Constant-vacuum, Quadrajet
• fitment type: Direct Replacement
• fits: For Quadrajet 4mv 4 Barrel For Chevrolet Engines 327 350 427 454
• intake size: 35mm 57.2mm
• items included: Gasket, Mounting Hardware
• manufacturer warranty: 2 Year
• material: Alloy
• maximum flow: Cfm
• mounting flange type: Spread Bore
• mounting stud measure: 108mm 143mm
• note: No Instruction Included
• notice: This Is Aftermarket Replcement Part
• oe/oem part number: 1901r, 1901-gg, 7026202, 7026203, 7026210, 7027202, 7027203, 7027212, 7027123, 7040007, 7040021, 7046904, 7047207, 7047303, 7047305, 7047306, 7047307, 7047316, 7047319, 17054236, 17054709, 170549
• part type: Intake Fuel System
• specific: 4 Barrel
• type: Carburetor
• universal fitment: Yes

returns carbcoon:

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

general carbcoon:

• condition: New
• Car Truck Parts Accessories > Air Fuel Delivery > Carburetors

offer carbcoon:

• best offers: True
• sold: 0
• availability: In Stock
• options: Ship-to-home
• started: June 2, 2025

shipping carbcoon:

• service: FedEx Ground or FedEx Home Delivery
• type: Fixed
• cost: $0.00
• carrier: FedEx
• class: Standard
• transit: 3-7 Days

payments carbcoon:

• wallet: Paypal
• credit card: Diners-club
• other

seller carbcoon:

• # reviews: 20551
• city: Dayton, New Jersey
• rating: 99.2%

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