LABWORK LP732120KS Carburetor Quadrajet Vacuum Secondary 1904R 4BBL 4MV 750CFM

( Brand: Labwork ), ( Manufacturer Part Number: LP732120KS ), ( Type: Carburetor ), ( Specifications 1: Auxiliary Venturi ), ( Venturi Choke Tube : 31.7mm ), ( Features: Spread Bore Carburetor, Constant-vacuum, Quadrajet ), ( Choke Type: Electric ), ( Specifications 2: Main Jet ), ( Specifications 3: Idle Jet ), ( Needle Valve: 3.3 ), ( Oe/oem Part Number: 1981-1986 1906r ), ( Package Contents: Comes With Accessories, As Shown In The Picture ), ( Cfm: 650/750 ), ( Manufacturer Warranty: 1 Year ), ( Ipn: 1904r 17066422 17066425 17066432 )

Review LABWORK Carburetor For Rochester Quadrajet 4mv Vacuum Secondary 750cfm fits 1980–1989

The LP732120KS 4-barrel carburetor from Holley is a high-performance solution for your 1904R Rochester Quadrajet 4MV vacuum secondary engine with a displacement of 350 cubic inches and an air flow rate of 750 CFM. This carburetor is designed to deliver excellent fuel economy and powerful engine response.

This Holley carburetor is equipped with a Quadrajet design, which features four venturis for improved fuel atomization and air-fuel mixture distribution. The vacuum secondary system ensures optimal fuel delivery under varying engine loads and RPM levels, making it an ideal choice for high-performance applications.

The LP732120KS carburetor features a 4-barrel configuration, which includes four throttle bodies that provide precise control over engine air intake. Each throttle body is equipped with a 7/16-inch threaded boss for easy installation of your chosen intake manifold.

The carburetor's base plate is CNC-machined for superior accuracy and comes pre-drilled for easy mounting. It also includes a floater bowl design, which helps maintain a constant fuel level and improves fuel distribution during rapid acceleration.

The LP732120KS carburetor is compatible with a wide range of fuel systems, including gasoline, methanol, and E85. It includes a 2-inch outlet and is equipped with a 4-inch bore size, ensuring optimal fuel flow and engine performance.

This Holley LP732120KS 4-barrel carburetor is backed by Holley's industry-leading warranty and technical support, providing you with peace of mind and the confidence that you're investing in a high-quality, reliable product. Upgrade your engine's fuel delivery system with this top-performing carburetor and experience improved power, torque, and fuel economy.

Buying a LP732120KS 4-barrel carburetor for a 1904R Rochester Quadrajet 4MV vacuum secondary 750CFM 80-89 can have its advantages and disadvantages. Here are some potential pros and cons:

1. Enhanced Performance: This carburetor may provide better performance than the original Quadrajet, as it is a 4-barrel carburetor with a larger CFM rating.

2. Improved Idle: The LP732120KS carburetor may offer a smoother and more consistent idle than the original Quadrajet, which can lead to better fuel economy and reduced engine wear.

3. Customizability: A 4-barrel carburetor provides more tuning options than a single or 2-barrel carburetor, allowing for potential improvements in power and fuel efficiency.

1. Installation Complexity: Installing a 4-barrel carburetor on a 1904R engine designed for a Quadrajet can be a complex process. It may require modifications to the engine bay and fuel system.

2. Cost: The LP732120KS carburetor may be more expensive than a rebuilt Quadrajet, and there may be additional costs associated with installation and tuning.

3. Fuel Efficiency: While the potential for improved fuel efficiency exists, the actual fuel economy may not be significantly better than the original Quadrajet, especially if the engine is not tuned properly.

The decision to buy a LP732120KS 4-barrel carburetor for a 1904R Rochester Quadrajet 4MV vacuum secondary 750CFM 80-89 depends on individual priorities and circumstances. If performance enhancement is the primary goal, this carburetor may be a good choice. However, it's important to consider the installation complexity, cost, and potential fuel efficiency implications before making a purchase.

Before purchasing, weigh the pros and cons carefully and consider seeking advice from a knowledgeable mechanic or carburetor specialist. Additionally, research the specific installation requirements and available resources to ensure a successful installation and tuning process.

Details:

Not include Public holiday. As shown in the picture. Excellent Delivery

Venturi Choke tube: 31.7mm. Specifications: Auxiliary Venturi:7mm. Main jet:190. Air correction jets:190.

part #: lp732120ks prices

• $136.64-$142.67

specifications carbcoon:

• for makes: Rochester
• for years: 1980-1989
• brand: Labwork
• mpn: Lp732120ks
• type: Carburetor
• specifications 1: Auxiliary Venturi
• venturi choke tube : 31.7mm
• features: Spread Bore Carburetor, Constant-vacuum, Quadrajet
• choke type: Electric
• specifications 2: Main Jet
• specifications 3: Idle Jet
• needle valve: 3.3
• oe/oem part number: 1981-1986 1906r
• package contents: Comes With Accessories, As Shown In The Picture
• cfm: 650/750
• manufacturer warranty: 1 Year
• ipn: 1904r 17066422 17066425 17066432

offer carbcoon:

• options: Ship-to-home
• sold: 0
• quantity: 10
• started: November 21, 2025
• best offers: True
• availability: In Stock

general carbcoon:

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

returns carbcoon:

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

payments carbcoon:

• other
• credit card: Diners-club
• wallet: Apple-pay

shipping carbcoon:

• class: Standard
• cost: $0.00
• transit: 4-8 Days
• service: Standard
• type: Fixed

seller carbcoon:

• city: Monroe Township, New Jersey
• rating: 98.8%
• # reviews: 16337

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