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Holley Ultra XP Carburetor
SKU
HTPD-0-80845HBX
List price
$1,739.94
Price
$1,449.95

    950 CFM - 4150 - Mechanical Secondaries - Hard Core Gray - E85

    Features
    • 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
    • E85 specific calibration
    • 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.
    • 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
    • .130" stainless needle & seats to control the demand of E-85
    • 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 4150â„¢ 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
    • Throttle shaft is slabbed and undercut for improved airflow
    • 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
    • Stainless steel throttle plates
    • Includes notched float and jet extensions
    • 100% wet-flow tested by Holley technicians to assure it arrives ready to run!
    Brand
    HOLLEY
    Category
    Carburetor
    Specs
    CFM: 950
    Fuel: E85
    Brand: Holley
    Choke: None
    Model: 4150
    Finish: Hard Core Gray
    Barrels: 4
    Booster: Downleg
    Warning: California Proposition 65
    Category: Air and Fuel Delivery
    Material: Aluminum
    Warranty: Manufacturer's Limited 90 Day Warranty
    Condition: New
    Fuel Type: E85
    part type: Carburetor
    Body Color: Hard Core Gray
    Fuel Inlet: Dual
    Grade Type: Performance
    Marine Use: No
    Body Finish: E-Coated
    Flange Type: Square/4150
    Secondaries: Mechanical
    Billet Color: Hard Core Gray with Black
    Product Type: Carburetor
    Sub Category: Carburetion
    Emission Code: 3
    Throttle Bore: 1.750 inch
    Venturii Size: 1.600 inch
    Booster Design: Downleg
    Carburetor Use: Professional Race
    Barrel Quantity: 4
    Marine Approved: No
    Spacer Included: No
    Linkage Attached: Yes
    Primary Main Jet: 96
    Secondary Main Jet: 106
    Carburetor Material: Aluminum
    Idle Air Bleed Size: 67
    Primary Power Valve: 5.5
    High Speed Air Bleed: 24
    Primary Jet Diameter: 96
    Mounting Hole Quantity: 4
    Primary Pump Nozzle Size: 42
    Supercharged Application: No
    Secondary Pump Nozzle Size: 50
    Cubic Feet Per Minute Rating: 950
    PDFs
    68b196da0e923.pdf (704.75 KB)