Xtreme Performance - Holley Ultra XP(TM) carburetors! Ultra XP carbs are up to 38% lighter than our traditional race carbs, have fuel capacity that is 20% greater and 30 other new features! Theyre available in our all-new Hard Core Gray(TM) hard coat anodized finish with Black(TM) billet for improved corrosion protection. Theyre also available in natural tumble-polished aluminum with your choice of Black(TM) or Red(TM) metering blocks and base plate. The Aluminum Ultra XP comes in 600, 650, 750, 850, and True 950-CFM. Holley Ultra XP carburetors offer new features such as an integrated idle bypass valve that allows for idle adjustments while maintaining the correct throttle plate to transfer slot relationship, high capacity fuel bowls which feature 20% more fuel capacity to eliminate starvation, integrated fuel shelf to minimize fuel aeration and internal baffling to control fuel slosh. Other features include all aluminum construction, fully tunable billet metering blocks, billet base plate, adjustable secondary linkage and knurled (hand adjustable) curb idle screws. Holley Ultra XP carburetors are the ultimate in square bore race carburetors!
- Aluminum Construction - Saves 4.5 lbs. - 38% Weight Savings
- Hard Core Gray w/Blk Billet Alum. Metering Block/Booster Inserts
- Designed For Use On Drag Car/Circle Track/High HP Engines
- Contoured Venturi Inlet Offers Balanced Airflow For Increased HP
- Air Bleeds Moved Outward To Allow Smoother Transition Of Airflow
- Metering Blocks Feature Improved Durability/True Gasket Sealing
- Dual 50cc Accelerator Pumps Provides Perfect Amount of Fuel
- Fuel Bowls Provide 20% More Fuel Capacity
- Clear Sight Window On Both Sides For Easy/Safe Fuel Level Adjs.
- 8AN Inlet Threads Offer Variety Of Plumbing Options
- 0.150in. Stainless Needles/Seats To Control The Demand of E-85
- 100% Wet-Flow Tested To Assure It Arrives Ready To Run!
Holley Performance Emission Code 3: This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles and Racing Use Only Vehicles. The following vehicles are considered Uncontrolled (Non-Emissions Controlled) Vehicles: 1965 and older U.S. manufactured California Certified vehicles/1967 and older U.S. manufactured Federally Certified vehicles/1967 and older Foreign manufactured vehicle. The following vehicles are considered Racing Use Only Vehicles: Racing Use Only Vehicles are vehicles that are used exclusively for competition and that are not registered and that may never be used on the street. WARNING: It is against the law to install this part on an Emissions Controlled Vehicle. The following vehicles are considered Emissions Controlled Vehicles: 1966 and newer U.S. manufactured California Certified vehicles/1968 and newer U.S. manufactured Federally Certified vehicles/1968 and newer Foreign manufactured vehicle
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.
About Holley Performance Products
Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors powered every Monster Energy NASCAR Cup team and nearly every NHRA Pro-Stock champion for four decades. Now, Holley EFI products power these cars and are dominating the performance world. Holley products for GM's popular LS engine are dominating the LS scene as well. Holley's products also include performance fuel pumps, intake manifolds and engine dress-up products for street performance, race and marine applications. As a single solution or partnered with products from other Holley companies we can give you the edge you need over the competition!