fits model: Xp.

( Brand: Holley ), ( Manufacturer Part Number: 0-80804HBX ), ( Type: Ultra Xp Carburetor ), ( Country/region Of Manufacture: United States ), ( Performance Part: Yes ), ( UPC: 090127713471 )
The Holley 0-80804HBX Performance Ultra XP Carburetor is a premium fuel delivery system designed for high-performance applications. This carburetor is part of Holley's Ultra series, which is engineered to provide exceptional power, drivability, and idle quality.
The Ultra XP carburetor features Holley's patented XP Series technology, which allows for a vacuum secondary circuit that maximizes power in all RPM ranges. The electro-mechanical secondaries use a unique diaphragm and plug design, making them quieter and more efficient than traditional lob-style secondaries.
This carburetor boasts an all-new bowl gasket design with an enlarged bowl for improved Flo-Bowl fuel capacity and metering capability. The Ultra XP also features a revolutionary new base gasket design with integrated mounting points, making installation simpler and faster.
The Holley 0-80804HBX carburetor is equipped with a large, baffled air cleaner element, which helps reduce turbulence and improve airflow for better idle and throttle response. The adjustable idle mixture control and power valve provide fine-tuning options for optimal engine idle, while the adjustable accelerator pumps ensure proper fuel delivery during hard acceleration.
Additional features include brass fittings, a high-performance fuel pressure regulator, and a hand-honed, 6061 T6 billet aluminum float bowl for superior paint finish and durability. The Ultra XP is compatible with a wide range of Holley fuel systems, making it a versatile option for hot rod and muscle car enthusiasts.
In summary, the Holley 0-80804HBX Performance Ultra XP Carburetor delivers a powerful, smooth ride with excellent idle quality and improved throttle response. Its innovative design and features make it an ideal choice for high-performance applications, ensuring optimal engine power and efficiency.
The Holley 0-80804HBX Performance Ultra XP Carburetor is a popular choice among car enthusiasts who are looking to upgrade their factory carburetor for better performance. Here are the pros and cons of buying this carburetor:
Pros:1. High-Performance Design: The Holley Ultra XP carburetor is known for its high-performance design. It provides excellent air/fuel mixture for improved engine response, power, and drivability. Its advanced design includes a high-grip diaphragm, solid ten-micron filter, and multi-pore metering rods that ensure a consistent and smooth fuel delivery.
2. Easy Installation: Installing the Holley Ultra XP carburetor is relatively easy, especially if the user is familiar with basic carburetor installation procedures. Holley offers installation guides and various mounting options to simplify the process.
3. Flex-Fuel Capable: The Holley Ultra XP carburetor is flex-fuel capable, which means it can support both gasoline and E85 ethanol fuel blends. This feature makes it an ideal choice for enthusiasts who want to experiment with different fuel types.
4. Adjustability: The Holley Ultra XP carburetor offers great adjustability, allowing users to fine-tune the carburetor to meet their specific engine requirements. It includes various adjusting screws such as emulsion, power valve, and an adjustable idle circuit to easily vary the idle mixture and achieve optimal performance.
5. Quality Construction: The Holley Ultra XP carburetor boasts high-quality construction with a durable cast aluminum housing and stainless steel components. This ensures the carburetor not only performs well but also looks great under the hood.
Cons:1. Cost: The Holley Ultra XP carburetor is a premium product and comes with a higher price tag compared to factory carburetors or other aftermarket carburetors. This may be a concern for budget-conscious enthusiasts.
2. Complexity: The high-performance features of the Holley Ultra XP carburetor can make it more complex than factory carburetors, which might intimidate users who are not familiar with advanced adjustments and requirements.
3. Carburetor Synchronization: For users who have multiple carburetors, syncing the Holley Ultra XP carburetor with other carburetors on the vehicle can be a challenge. Ensuring each carburetor is providing the same fuel mixture and air/fuel ratio for all cylinders is crucial for optimal engine performance.
4. Power Requirement: To achieve optimal performance, the Holley Ultra XP carburetor might require more power than a factory carburetor. This could potentially impact the vehicle's fuel economy, and users who prioritize fuel efficiency over performance might be better off with a stock carburetor.
Conclusion:The Holley 0-80804HBX Performance Ultra XP Carburetor offers numerous benefits such as high performance, durability, ease of installation, flexibility with fuel types, and adjustability. For car enthusiasts who value power, customization, and a high-quality carburetor, the Ultra XP could be an excellent investment, despite its slightly higher cost. However, users with budget constraints, less experience in carburetor tuning, or a preference for fuel efficiency might find a factory carburetor or a lower-end aftermarket carburetor more suitable for their needs.
Recommendation:If you're an enthusiast aiming for exceptional performance, the Holley 0-80804HBX Performance Ultra XP Carburetor could be the right choice. It supplies excellent air/fuel mixtures, offers advanced tunability options, and provides peace of mind with its robust construction. However, it's essential to consider whether your budget, experience level, and engine requirements align with the carburetor's features. Before making a purchasing decision, carefully consider these factors and, if needed, consult experts or other knowledgeable users within your automotive community.
Contoured Venture Inlet Balances Airflow For Increased hp. Secondary; Gas; Dual Fuel Inlet; Hard Core Gray w/Black Metering Block/Booster Inserts;. Material: Aluminum. Flange: Square Bore.
Fuel Inlet: Dual. Emission: Without EGR. Clear Sight Windows On Both Sides Of Bowls For Safe Fuel Level. Type: Automotive.
Manufacturer: Holley, Part Number: 0-80804HBX, condition: New: Carburetor. Metering Blocks/True Gasket Sealing/Fully Adjustable. Booster Type: Down Leg. FEATURES: Aluminum Construction.
SPECIFICATIONS: Barrel: Four. Billet Color: Hard Core Gray with Black. Fuel Type: Gasoline. Supercharged Application: No.
Holley's products also include performance fuel pumps, intake manifolds engine dress-up for street performance, race and marine applications. Carburetor Type: 4150. Drain Plug On Bowl Provides Easy Access To Empty. Primary Main Jet: 84.
Ultra XP Carburetor; 4 bbl; 850 cfm ; 2 Circuit Metering; model 4150UXP; Meh. Holley Ultra XP carburetors are the ultimate in square bore race. Usage: Street/Hi-Performance. Air Bleeds Moved Outward For Smoother Transition Of Airflow.
They're also available in natural tumble-polished aluminum with your choice of Black or Red metering blocks and base plate. Extreme Performance - Holley Ultra XP carburetors. Other features include all aluminum construction, fully unable billet metering blocks, base plate, adjustable secondary linkage and knurled hand adjustable curb idle screws. Holley carburetors have powered every NASCAR Sprint Cup team and nearly NHRA Pro-Stock champion for four decades.
Secondary Type: Mechanical. Finish: Hard Core Gray. Idle Bypass Valve Eliminates Holes In Throttle Plates.