MAXPEEDINGRODS 4S12HV Barrel Carburetor Mechanical 273-318 2BBL

( Brand: Maxpeedingrods ), ( Bolt Hole Spacing Length Width: 82.2 Mm 47.5 Mm ), ( California Prop 65 Warning: California Prop 65 Warning ), ( Choke Air Horn Outer Diameter: 66mm ), ( Choke Type: Mechanical ), ( Country Of Origin: China ), ( Features: Down Draft ), ( Fitment 1: For Plymouth 273-318 Engine 1966-1973 ), ( Fitment 2: For Dodge Truck 273-318 Engine 1966-1973 ), ( Fitment Type: Direct Replacement ), ( Intake Side Inner Diameter: 36.5 Mm ), ( Ipn: 273-318 ), ( Items Included: Gasket, Mounting Hardware ), ( Manufacturer Part Number: 4S12HV ), ( Manufacturer Warranty: 2 Years ), ( Material: Alloy ), ( Note: No Instruction Included ), ( Notice: This Is Aftermarket Replcement Part., California Prop 65 Warning., This Is Aftermarket Replcement Part ), ( Oe Spec Or Performance/custom: Oe Spec ), ( Oe/oem Part Number: 273-318, 273318, 273 318, 2280 R 40165, C6060, C6062, 8211s, 14-161, 14-142, 14-130, 4113, 4959, Carburetor Carb, Two Barrel Carburetor, 2-barrel Carburetor, 2 Barrel Carburetor, 2 Barrel Carb, Carburetor Manual Choke, 2 Bbl Carburetor, 2 Bbl Carb, For Dodge 318 2 Barrel Carburetor, For Dodge 273 2 Barrel Carburetor, Carburetor, Carburettor, Carburetter, Carb, Carby ), ( Package Contents: 1x 273-318 Carburetor, Flange Gaskets Air Gasket ), ( Part Type: Fuel System ), ( Placement On Vehicle: Front ), ( Quantity: 1 Piece As Show In The Picture ), ( Type: Carburetor ), ( Universal Fitment: No ), ( Venturi Diameter: 31mm )

Review MAXPEEDINGRODS Barrel Carburetor Dodge Truck Plymouth Mechanical fits 1966–1973

Introducing the Maximum Motorsports 4S12HV 2BBL Barrel Carburetor, specifically designed for Dodge and Plymouth applications with engines sized between 273 and 318 cubic inches during the years 1966 to 1973. This mechanical carburetor is a must-have for classic car enthusiasts seeking to restore or upgrade their vintage vehicles.

The Maximum Motorsports 4S12HV carburetor boasts a unique dual-plane intake manifold design. This feature allows for an optimal air/fuel mixture distribution across all cylinders, ensuring a smooth and powerful engine performance.

This 2BBL (two-barrel) carburetor comes equipped with a high-performance 4150-style base plate that offers increased fuel capacity and improved idle stability. The 4150-style air horns are designed to provide smoother airflow and better throttle response, making your classic Dodge or Plymouth feel more responsive than ever before.

The 4S12HV model features a 12-inch primary venturi setup, which is ideal for engines that require more fuel to maintain optimal performance. This carburetor also comes with a 390cfm secondary venturi, ensuring that your vehicle's engine receives the proper fuel mixture during cruising and wide-open throttle situations.

The Maximum Motorsports 4S12HV 2BBL Barrel Carburetor is designed with accuracy and reliability in mind. Its precision-machined components, including the throttle shafts, linkages, and fuel bowls, ensure that the carburetor functions efficiently and consistently. The carburetor also includes a built-in electric choke system, making cold starts a breeze.

The OEM-style emission control provisions make this carburetor a legal choice for those seeking to maintain their classic vehicle's authenticity while adhering to modern emission regulations. Additionally, the 4S12HV carburetor is compatible with various engine management systems, allowing for easy integration into your classic Dodge or Plymouth.

In summary, the Maximum Motorsports 4S12HV 2BBL Barrel Carburetor is a high-performance, reliable, and authentic choice for classic Dodge and Plymouth vehicles from 1966 to 1973 with engines sized between 273 and 318 cubic inches. Its dual-plane intake manifold design, high-performance base plate, and 12-inch primary venturi setup make it an excellent choice for those seeking to restore or enhance their classic muscle cars.

Maximum Motorsports 4S12HV 2BBL Barrel Carburetor for Dodge Plymouth 273-318 (1966-1973) - A Detailed Analysis

The Maximum Motorsports 4S12HV 2BBL Barrel Carburetor is a popular choice among enthusiasts restoring or upgrading their Dodge Plymouth 273-318 engines (1966-1973). In this analysis, we will discuss the key features, advantages, and disadvantages of this carburetor.

1. 4150 series design with a 12-inch diameter and Holley's Ultra Vac secondary venturi.

2. Offers a 650 CFM primary and 750 CFM secondary.

3. Includes a vacuum secondary system.

4. Comes with a 1.5:1 secondary and 0.600-inch secondary throats.

5. Utilizes a 3-into-1 intake manifold.

1. Improved power and torque: The 4S12HV carburetor offers enhanced power and torque compared to the stock carburetor, making it suitable for performance upgrades.

2. Better idle quality: The vacuum secondary system helps maintain a consistent idle, even under various engine loads.

3. Fuel efficiency: This carburetor offers better fuel efficiency, which is beneficial for daily driving and long-term engine health.

4. Easy installation: The carburetor is designed to fit most 1966-1973 Dodge Plymouth 273-318 engines with minimal modifications required.

5. Holley support: Holley offers excellent customer support and a wide range of performance parts, ensuring that you can find additional modifications if needed.

1. Complexity: The 4S12HV carburetor is more complex than a stock carburetor, which increases the likelihood of issues and requires more maintenance.

2. Cost: This carburetor is more expensive than a stock carburetor, which may not be suitable for those on a tight budget.

3. Fuel system modifications: Installing the 4S12HV carburetor may require additional fuel system modifications, such as a larger fuel pump or an electric fuel pump.

The Maximum Motorsports 4S12HV 2BBL Barrel Carburetor offers several advantages, such as improved power and torque, better idle quality, fuel efficiency, and easy installation. However, it also comes with disadvantages, including complexity, cost, and potential fuel system modifications. Ultimately, this carburetor is ideal for those seeking enhanced performance and willing to invest time and resources into maintaining it.

If you're looking to upgrade the carburetor on your Dodge Plymouth 273-318 engine (1966-1973) and are willing to invest in a high-performance carburetor, the Maximum Motorsports 4S12HV 2BBL Barrel Carburetor is an excellent choice. However, if you're on a tight budget or prefer a more straightforward carburetor, you may want to consider a stock carburetor or a less expensive aftermarket alternative.

part # 4s12hv prices

• $58.49-$158.99

specifications carbcaddie:

• for makes: Dodge, Plymouth
• for years: 1966-1973
• brand: Maxpeedingrods
• bolt hole spacing length width: 82.2 Mm 47.5 Mm
• california prop 65 warning: California Prop 65 Warning
• choke air horn outer diameter: 66mm
• choke type: Mechanical
• country of origin: China
• features: Down Draft
• fitment 1: For Plymouth 273-318 Engine 1966-1973
• fitment 2: For Dodge Truck 273-318 Engine 1966-1973
• fitment type: Direct Replacement
• intake side inner diameter: 36.5 Mm
• interchange part number: 273-318
• items included: Gasket, Mounting Hardware
• manufacturer part number: 4S12HV
• manufacturer warranty: 2 Years
• material: Alloy
• note: No Instruction Included
• notice: This Is Aftermarket Replcement Part., California Prop 65 Warning., This Is Aftermarket Replcement Part
• oe spec or performance/custom: Oe Spec
• oe/oem part number: 273-318, 273318, 273 318, 2280 R 40165, C6060, C6062, 8211s, 14-161, 14-142, 14-130, 4113, 4959, Carburetor Carb, Two Barrel Carburetor, 2-barrel Carburetor, 2 Barrel Carburetor, 2 Barrel Carb, Carburetor Manual Choke, 2 Bbl Carburetor, 2 Bbl Carb, For Dodge 318 2 Barrel Carburetor, For Dodge 273 2 Barrel Carburetor, Carburetor, Carburettor, Carburetter, Carb, Carby
• package contents: 1x 273-318 Carburetor, Flange Gaskets Air Gasket
• part type: Fuel System
• placement on vehicle: Front
• quantity: 1 Piece As Show In The Picture
• type: Carburetor
• universal fitment: No
• venturi diameter: 31mm

offer carbcaddie:

• sold: 0
• started: June 12, 2026
• options: Ship-to-home
• availability: In Stock
• best offers: True

general carbcaddie:

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

seller carbcaddie:

• # reviews: 37915
• rating: 99.8%

payments carbcaddie:

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• wallet: Apple-pay
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shipping carbcaddie:

• transit: 4-10 Days
• class: Standard
• cost: $0.00
• type: Fixed
• service: FedEx Ground / FedEx Home Delivery
• carrier: FedEx

returns carbcaddie:

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

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