Ultra XP Aluminum Carburetor 600 CFM

Name: Ultra XP Aluminum Carburetor 600 CFM
Brand: HOLLEY
SKU: 510-0-80801HBX
Price: 1132.95 USD
Availability: OutOfStock

Currently Unavailable

This product is no longer available. Please call customer service for assistance at 1-800-345-4545.

600 CFM

Ultra XP Aluminum Carburetor

600 CFM

Hard Core Gray w/Black

Holley 0-80801HBX Features:

Xtreme Performance - Holley Ultra XP™ 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! They're available in our all-new Hard Core Gray™ hard coat anodized finish with Black™ billet for improved corrosion protection. They're also available in natural tumble-polished aluminum with your choice of Black™ or Red™ 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 with black anodized billet aluminum metering block and booster inserts
Designed for use on Drag race, circle track, or any high horsepower engines
Contoured venturri inlet offers balanced airflow for increased horsepower
Air bleeds moved outward to allow a smoother transition of airflow from the top of the carburetor into the venturii
Metering blocks feature improved durability, true gasket sealing and fully adjustable (emulsion bleeds, power valve channel restrictors & idle feed restrictors)
Integrated idle bypass valve eliminates the need for holes in throttle plates and allows for proper adjustment of idle while maintaining correct throttle plate to transfer slot relationship. Helps maintain good idle control when using radical camshafts.
Dual 30cc accelerator pumps provide the perfect amount of fuel from idle to full throttle
Fuel bowls provide 20% more fuel capacity while controlling slosh with internal baffling
Clear sight windows on both sides of bowls for easy and safe fuel level adjustments
Built in drain plug in front center of bowl provides easy access to empty contents of bowl
8AN (o-ringed) inlet threads offer a large variety of plumbing options and can be plumbed from either side
4 corner idle allows you to precisely control your idle system
Mechanical Secondaries for perfect off the line launches
Elongated (dual pattern) mounting holes allow fitment on intakes with square flange (Holley 4150™ style) or large flange (Holley Dominator® style)
Knurled (hand adjustable) primary and secondary curb idle screws allow for easy idle adjustment without the use of tools
Primary throttle shaft capped to prevent entry of debris & contaminates
Factory machined accessory mounting hole for easy addition of adjustable primary throttle stop. New secondary pump cam lever designed to provide positive throttle stop on secondary side
Stainless steel adjustable secondary link. Provides choice of 1:1 or progressivesecondary throttle actuation for ultimate control of secondary opening rate
Baseplate designed with a boss that can be consumer machined for vacuum source
Includes notched float and jet extensions
100% wet-flow tested by Holley technicians to assure it arrives ready to run!

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

How to Make the Best, Better!

The Holley HP series carburetors have been the standard in racing carburetors for nearly two decades! So how do you make them better? You make the new Holley Ultra XP Aluminum Carburetors 38% lighter, increase the fuel capacity by 20% and add 30 other new features! They're available in all-new Hard Core Gray hard coat anodized finish with Black billet for improved corrosion protection. They're also available in natural tumble-polished aluminum with your choice of Black or Red metering blocks and base plate. These carburetors are available in 600, 650, 750, 850, and True 950-CFM sizes!

6061-T6 Billet Aluminum Metering Blocks

Improved durability, true gasket sealing (sealing surface integrity), bright dipped anodized for good looks and corrosion protection
Fully adjustable (emulsion bleeds, power valve channel restrictors & idle feed restrictors). Power valve channel restrictors now machined lower in metering block for improved fuel delivery to power valve circuit
Accelerator pump channel now internally drilled eliminating need for external plug
Excess material removed for improved fuel capacity
Integrated pry-point assists in disassembly from fuel bowl and mainbody preventing damage to gaskets and gasket surfaces
New snap in place bowl vent whistle makes removal and/or replacement easier

6061-T6 Billet Aluminum Base Plate
Improved durability, true gasket sealing, bright dipped anodized for good looks and corrosion protection
Elongated (dual pattern) mounting holes allow fitment on intakes with square flange (Holley 4150 style) or large flange (Holley Dominator style)
Dedicated race-only throttle lever with all unnecessary street attachment points & tangs removed
950 CFM throttle shaft comes slabbed and undercut for improved airflow
Stainless steel adjustable secondary link. Provides choice of 1:1 or progressive secondary throttle actuation for ultimate control of secondary opening rate
Knurled (hand adjustable) primary and secondary curb idle screws allow for easy idle adjustment without the use of tools
Primary throttle shaft capped to prevent entry of debris & contaminates
Factory machined accessory mounting hole for easy addition of adjustable throttle stop
Throttle body and new secondary pump cam lever designed to provide positive throttle stop on secondary side. Delivers safe & reliable 90° opening and return of throttle plates while ensuring maximum airflow
Baseplate designed with a boss that can be consumer machined for vacuum source

All New Fuel Bowl Design
Completely redesigned from the ground up for racing
20% more fuel capacity vs. a traditional v-bowl eliminates fuel starvation and provides consistent air/fuel ratios
Internal baffling to help control fuel slosh and minimize float level fluctuations in hard launching or cornering situations
Fuel shelf below the needle and seat to greatly minimize fuel aeration and promote more consistent metering
Fuel trough designed into floor of bowl to route fuel flow directly to the jets and assist in keeping jets covered by fuel
Clear Pyrex sight windows on both sides of bowls for easy and safe fuel level adjustments
(A) Built in drain plug in front center of bowl provides easy access to empty contents of bowl
(B) Contoured entry provides smooth fuel flow directly to needle & seat
-08AN (O-ringed) inlet threads offer a large variety of plumbing options (come standard with -08AN O-ring to -06AN male adapter and -08AN plug). Can be plumbed from either side
Material added in key areas (needle & seat area, fuel inlet, sight window area) for added strength in the demanding race environment
Note: New lengthened fuel line required due to increased length of bowls

Updated Main Body Design
Air bleeds moved outward to allow a smoother transition of airflow from the top of the carburetor into the venturi
Integrated idle bypass valve eliminates the need for holes in throttle plates and allows for proper adjustment of idle while maintaining correct throttle plate to transfer slot relationship. Helps maintain good idle control when using radical camshafts.
All unnecessary mounting bosses removed for a smoother, cleaner appearance
Contoured hex head squirter screws for streamlined airflow
Cast in Holley XP logo for easy identification by race sanctioning bodies

Features:
100% Holley - Made in the U.S.A.
97% aluminum construction
38% weight savings
20% more fuel bowl capacity
10 new fuel bowl features
10 new base plate features
6 new metering block features
5 new main-body features
1 new carburetor...Ultra XP

Carburetor Technical Specifications Guide, Click Here