0-80541-2 650 CFM 4150 HP Series Classic Carburetor, Mechanical Secondary - Gold Dichromate Finish

Name: 0-80541-2 650 CFM 4150 HP Series Classic Carburetor, Mechanical Secondary - Gold Dichromate Finish
Brand: HOLLEY
SKU: 510-0-80541-2
Price: 999.95 USD
Availability: InStock

^$999⁹⁵

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650cfm

650 CFM 4150 HP Series Classic Carburetor

Mechanical Secondary

Non-Choke

Dual Fuel Inlet

Calibrated for Gasoline

Aluminum

Gold Dichromate Finish

NASCAR-Approved

Sold Individually

0-80541-2 Features:

Includes notched floats and jet extensions
Square-bore flange bolt pattern
Contoured venturi inlet for balanced airflow and reduced turbulence
Screw-in air bleeds for precise tuning
Dual 30cc accelerator pumps provide additional fuel under initial acceleration
High-flow metering blocks with reusable gaskets
Dominator-style fuel bowls for plumbing lines on either side
4-corner idle for idle system control
Progressive Secondaries for dialed-in starting line launches
Stainless steel throttle plates
100-percent wet-flow tested for ready-to-race right out of the box

Technical Specifications:

Primary main jet: 70
Primary power valve: 6.5
Primary pump nozzle size: 28
Secondary main jet: 70
Secondary power valve: 6.5
Secondary pump nozzle size: 29
Throttle bore: 1.688 in.
Venturi size: 1.250 in.
Straight booster
2-Circuit

Notes:

Replaces Holley, Edelbrock, Carter AFB, and Autolite-style carburetors with 5-3/16 (.1875) in. x 5-5/8 (.625) in. bolt pattern
An adapter is required to install on a spread bore-style intake manifold (sold separately)

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART

The Standard for Race-Ready Carburetors!

Holley HP Series Carburetors are the ideal choice for nearly all types of motorsports. Available in various CFM output options, HP Carburetors deliver balanced airflow into the engine through a contoured venturi inlet and precise tuning calibration through screw-in air bleeds. High-flow metering blocks provide the needed fuel volume for weekend applications to NASCAR. With a square bore base, they're ready to race right out of the box!

The Holley 4150 Carburetors are a time-tested favorite among performance enthusiasts, racers, and engine builders for one simple reason—they deliver proven power and tunability. Engineered for high-performance applications, the 4150 series offers unmatched fuel control, consistent airflow, and the flexibility to adapt to a wide range of engine builds. Whether you’re running a street machine or a full-blown race car, Holley’s legendary 4150 design gives you the edge. Each 4150 Holley carburetor features dual fuel inlets, mechanical or vacuum secondaries, and externally adjustable float bowls—making them easy to tune for maximum power and efficiency. The modular construction allows for quick part swaps and adjustments, so you can dial in performance to match changing track or driving conditions. With CFM ratings to fit various horsepower ranges, there's a 4150 model tailored to your specific setup. The Holley carb 4150 is built for durability with high-quality materials that resist corrosion and wear. Many models include electric chokes and come pre-calibrated for out-of-the-box performance, reducing install time and guesswork. The result? Crisp throttle response, stronger launches, and reliable fuel delivery when you need it most. From weekend cruisers to serious competition vehicles, the Holley 4150 remains the go-to choice for tuners who demand precision and performance. Shop Holley 4150 carburetors at JEGS today and give your engine the fuel system it deserves.