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HolleyPart 0-80845hbxMade in US
Product Details
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Key Features
Ultra XP Carburetor
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!
950 CFM - 4150 - Mechanical Secondaries - Hard Core Gray - E85
- 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 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
- 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!
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About this product
950 CFM - 4150 - Mechanical Secondaries - Hard Core Gray - E85
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Product Specifications
Automotive Item Grade
Performance
Barrel Quantity
4
Barrels
4
Billet Color
Hard Core Gray with Black
Body Color
Hard Coat Gray
Body Color
Hard Core Gray
Body Finish
E-Coated
Body Material
Aluminum
Booster Design
Downleg
Booster
Downleg
Brand
Holley
California Proposition 65 Chemical Name
20
Carburetor Material
Aluminum
Carburetor Use
Professional Race
Category
Air and Fuel Delivery
CFM Rating
950
Cfm
950
Choke
None
Color
Hard Coat Gray
Condition
New
Cubic Feet Per Minute Rating
950
Emission Code
3
Finish
Hard Core Gray
Flange Shape
Square
Flange Type
4150/4500
Flange Type
Square/4150
Fuel Inlet
Dual
Fuel Type
E85
Fuel
E85
Grade Type
Performance
High Speed Air Bleed
24
Idle Air Bleed Size
67
Linkage Attached
Yes
Marine Approved
No
Marine Use
No
Material
Aluminum
Mounting Hole Quantity
4
Part Type
Carburetor
Primary Jet Diameter
96
Primary Main Jet Size
96
Primary Main Jet
96
Primary Power Valve
5.5
Primary Pump Nozzle Size
42
Product Type
Carburetor
Secondaries
Mechanical
Secondary Barrel Type
Mechanical
Secondary Main Jet Size
106
Secondary Main Jet
106
Secondary Pump Nozzle Size
50
Spacer Included
No
Sub Category
Carburetion
Supercharged Application
No
Supercharger Compatible
No
Throttle Bore Diameter
1.750 inch
Throttle Bore
1.750 inch
Venturii Size
1.600 inch
Warning
California Proposition 65
Warranty
Manufacturer's Limited 90 Day Warranty
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Warranty & Compliance
Warranty
Manufacturer's Limited 90 Day Warranty
Country of Origin
US
Emissions Code
3
HS Code
8409915085
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Dimensions & Shipping
Product Dimensions
14.3 × 12.6 × 9.4 in
Shipping Dimensions
14.3 × 12.6 × 9.4 in
Weight
3470 g (3.47 kg)