fits model: Xp, 850.

( Brand: Holley ), ( Manufacturer Part Number: 0-80804HB ), ( Type: Carburetors ), ( Material: Aluminum ), ( Universal Fitment: Yes ), ( UPC: 090127671023 )
Introducing the Holley 0-80804HB Ultra XP Gas Barrel Carburetor, a high-performance fuel delivery system engineered for enthusiasts seeking optimal power and efficiency for their hot rods and muscle cars. This carburetor, with a CFM rating of 850, is part of Holley's Ultra XP series, which is renowned for its advanced features, ease of tuning, and unparalleled performance.
The Ultra XP Gas Barrel Carburetor boasts a modern, traditional appearance with a polished aluminum barrel, brass fuel bowl, and chrome-plated throttle shaft and linkage. The barrel's large 2.30-inch bore accommodates a 950 CFM Holley Street Dominator secondary, enabling the carburetor to deliver ample fuel flow for large engines.
Under the hood, this carburetor incorporates Holley's innovative Ultra XP technology. The Ultra XP system includes an electric choke, automatic enrichment circuits, and a vapor separator to deliver consistent idle quality and improved drivability. The Ultra XP carburetor also offers an optional built-in fuel pressure regulator, ensuring a steady fuel supply to the engine.
The Ultra XP Gas Barrel Carburetor features a high-performance fuel pump with a 12-volt, 160-gph capacity. This pump delivers sufficient fuel flow for high-horsepower applications, ensuring steady fuel delivery under heavy load conditions.
The carburetor's float bowls are vented to prevent fuel vapor lock, preventing the engine from stalling during hard acceleration or in hot conditions. Additionally, the carburetor comes equipped with a primary and secondary idle circuits, which can be fine-tuned using the included idle mixture screws to ensure a smooth and stable idle.
This Holley Ultra XP Gas Barrel Carburetor is compatible with a wide range of fuel systems and is suitable for both gasoline and methanol applications. The carburetor's mounting bosses are also compatible with Holley's accessory drives, making it easy to add accessories such as water pumps, alternators, and power steering pumps.
In summary, the Holley 0-80804HB Ultra XP Gas Barrel Carburetor is an excellent choice for hot rod and muscle car enthusiasts seeking high-performance fuel delivery with modern features and ease of tuning. With its large 850 CFM rating, advanced Ultra XP technology, and traditional appearance, this carburetor delivers the power, efficiency, and style that discerning enthusiasts demand.
The Holley 0-80804-HB Ultra LP Gas Barrel Carburetor is a high-performance carburetor designed for applications requiring large CFM (cubic feet per minute) airflow. Here are some pros and cons that might help you make an informed decision about purchasing this carburetor:
Pros:1. Large CFM Airflow: With an airflow capacity of 850 CFM, this carburetor can deliver a significant amount of fuel to high-performance engines, making it an excellent choice for hot rods, muscle cars, and race vehicles.
2. Fuel Efficiency: Holley's Ultra series carburetors are known for their fuel efficiency. The Ultra XP uses a metering rod and jet system to provide accurate fuel delivery, optimizing engine performance and reducing fuel waste.
3. Versatile Applications: This carburetor can be used with various fuel systems, including E85, methanol, and nitrous oxide. It is also compatible with both natural and LP (liquid propane) gas fuel sources, making it a versatile option for different applications.
4. Adjustability: The Holley Ultra XP offers various adjustment options, including the ability to fine-tune the idle mixture, main jet, and power valve settings. This customization allows users to optimize the carburetor for their specific engine and driving conditions.
5. Durability: Holley carburetors are known for their robust construction. This Ultra XP model features a billet aluminum base, heavy-duty diaphragms, and a high-quality finish that can withstand the rigors of high-performance driving.
Cons:1. Complex Installation: Installing a high-performance carburetor like the Holley Ultra XP can be a complex process. It requires a significant amount of time and expertise to ensure proper installation and tuning.
2. Expensive: The Holley Ultra XP is a premium carburetor, and its price tag reflects its advanced technology and high-performance capabilities. It may be a significant investment for some enthusiasts.
3. Requires Tuning: After installation, the Ultra XP requires fine-tuning to optimize its performance for specific engines and driving conditions. This process can be time-consuming and may require the assistance of a professional tuner.
Conclusion:The Holley 0-80804-HB Ultra LP Gas Barrel Carburetor is a high-performance, versatile, and efficient option for engines requiring large CFM airflow. Its robust construction, adjustability, and compatibility with various fuel systems make it a popular choice among enthusiasts and racers. However, its complex installation process, expensive price tag, and the need for tuning may deter some users. Ultimately, the decision to purchase this carburetor depends on your specific requirements, budget, and expertise level.
Recommendation:If you are looking for a high-performance carburetor capable of handling large CFM airflow and are willing to invest the time and resources into its installation and tuning, the Holley 0-80804-HB Ultra LP Gas Barrel Carburetor is an excellent choice. However, if you are new to carburetor installation and tuning, or if your budget is limited, you may want to consider a more entry-level carburetor or seek professional advice before making a decision.
Provides choice of 1:1 or progressive secondary throttle actuation for ultimate control opening rate, All new fuel bowl design-20% more capacity vs. A traditional v-bowl eliminates fuel starvation and provides consistent air/fuel ratios. So how do you make them better. Traditional v-bowl eliminates fuel starvation and provided consistent air/fuel ratios, Updated main body design-Integrated idle bypass valve the need for holes in throttle plates allows proper adjustment of while maintaining correct throttle.
They're available in an all new Hard Core Gray hard coat anodized finish with Black billet for superior corrosion protection. Billet Aluminum Metering Blocks, Fully adjustable emulsion bleeds, power valve channel restricts idle feed. Part # 0-80804HBX Condition New Brand Holley Sold Each Details Info HP four barrel Carburetors have been the standard in racing carburetors for nearly two decades. Fuel bowl can be plumbed from either side.
You make them 38% lighter, increase the fuel capacity by 20% and add 30 other new features. Aluminum construction-saves 4.5 lbs.-38% lighter, Billet aluminum metering blocks Fully adjustable emulsion bleeds, power valve channel restricts and idle feed restricts Power now machined lower in block for improved fuel delivery to circuit, base plates Stainless steel secondary link. Helps maintain good idle control when using radical camshafts. Updated Main Body Design, Integrated idle bypass valve eliminates the need for holes in throttle plates and allows proper adjustment of while maintaining correct plate to transfer slot relationship.