Holley HP™ carburetors have been the standard in racing carburetors for nearly two decades. Powering the biggest names in NASCAR to the Saturday night racer, HP carburetors are the perfect choice for all types of motorsports.
Classic HP carburetors are available from 390 to 1000 CFM and feature a contoured venturii inlet for balanced air flow, screw in air bleeds for precision tuning capabilities, high flow metering blocks and Dominator style fuel bowls which allow pluming from either side for ease of installation.
Holley HP carburetors are the standard for square bore race carburetors. Race-Ready out of the box!
Important Downloads:
- Gold Dichromate finish for corrosion resistance
- Optimized race calibration
- Contoured venturri inlet offers balanced airflow for increased horsepower
- Screw in air bleeds for precision tuning capabilities
- Dual 30cc accelerator pumps for additional fuel under initial acceleration
- Dual feed fuel inlets for constant high volume fuel delivery
- 4 corner idle allows you to precisely control your idle system
- Progressive Secondaries for perfect off the line launches
- Steel throttle plates
- Calibrated for gasoline
- 100% wet-flow tested by Holley technicians to assure it arrives ready to run!
- Barrels: 4
- Booster: Down Leg
- CFM: 390
- Choke: None
- Circuit: 2
- Emission Code: 3
- Finish: Gold Dichromate
- Fuel: Gasoline
- Fuel Inlet: Dual
- Material: Zinc
- Model: 4150
- Primary Main Jet: 65
- Primary Power Valve: 3.5
- Primary Pump Nozzle Size: 25
- Product Type: 4150 Model Carburetor
- Secondaries: Mechanical
- Secondary Main Jet: 65
- Secondary Power Valve: 3.5
- Secondary Pump Nozzle Size: 25
- Supercharged Application: No
- Throttle Bore: 1.437 inch
- Venturii Size: 1.062 inch
- Warranty: Limited 90 Day
- This model of carburetor has the square bore flange bolt pattern. It can replace Holley, Edelbrock, Carter AFB, and Autolite style carburetors with 5 3/16" x 5 5/8" bolt pattern. If you have a spreadbore style intake manifold, you will need an adapter to install this carburetor. Similar to the Mr. Gasket #1932.
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
Who is Holley?
Holley is a company known for producing high-performance parts that fit a variety of vehicles. The company’s history can be traced back to the late 1800s when brothers George and Earl Holley learned how to make pattern casting that enabled them to build one-cylinder engines. Then in 1903, they provided Henry Ford with the carburetor and became the industry leader in fuel system technology. The rest is, as they say, history.
Fuel System Experts
For over a century, Holley has always been at the forefront of designing parts for the fuel delivery system. From carburetors to electronic fuel injections, Holley has it all. Today, Holley is considered one of the most recognizable aftermarket brands in the world.
Being Part Of History
Not everyone is aware that Holley provided fuel systems components for the military during WWII, and it is not for automobiles but planes and boats. Since then, the company has become a dominant force when it comes to fuel delivery system components and has been used by many champion racers and enthusiasts.
Choice Of Champions
Since the 1960s, Holley has powered every NASCAR sprint cup car and every winning NHRA Pro Stock Team even today. It is a testament to the kind of products the company produces.
Purchase Holley Products At Vivid Racing
If you are in the market for high-quality fuel delivery system components for your vehicle, then choose the best brand out there, and that is Holley. Not every company can boast 100 years of experience.
To know more about Holley, visit Vivid Racing and check out their list of products that fit your specific requirement.
Holley Performance Products warrants its Holley Street Avenger™ Carburetor to be free from defects in material and workmanship for the life of the product on parts and one year on repair labor. After a period of one year, Holley will charge standard rates for repair labor. For any Holley Street Avenger Carburetor used in any type racing or off-road use will only be covered by a one (1) year limited warranty on parts and labor. Warranty performance will be initiated by returning the alleged defective product to HOLLEY PERFORMANCE PRODUCTS with the original, dated purchase receipt. Purchaser is to call toll free the Holley Factory Service number at 1-866-464-6553 to receive details and shipping instructions.
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