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Holley 4150 ALUM ULTRA XP 650 CFM CIRCLE TRACK-HARD BLACK 0-80812HBX

Holley 4150 ALUM ULTRA XP 650 CFM CIRCLE TRACK-HARD BLACK 0-80812HBX
Holley 4150 ALUM ULTRA XP 650 CFM CIRCLE TRACK-HARD BLACK 0-80812HBXHolley 4150 ALUM ULTRA XP 650 CFM CIRCLE TRACK-HARD BLACK 0-80812HBXHolley 4150 ALUM ULTRA XP 650 CFM CIRCLE TRACK-HARD BLACK 0-80812HBXHolley 4150 ALUM ULTRA XP 650 CFM CIRCLE TRACK-HARD BLACK 0-80812HBXHolley 4150 ALUM ULTRA XP 650 CFM CIRCLE TRACK-HARD BLACK 0-80812HBXHolley 4150 ALUM ULTRA XP 650 CFM CIRCLE TRACK-HARD BLACK 0-80812HBX
$1,880.99 ea
NEWARRIVING SOONEstimated Ship Date 07/11/2024 (If Ordered Today)1 Available from HOLLEY PERFORMANCE PRODUCTS as of 06/23/2024
Model: 3990506
STANDARD
DELIVERY
Xtreme Performance - Holley Ultra XP™ Circle Track 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 Hard Core Gray™ hard coat anodized finish with Black™ billet for improved corrosion protection & also available in natural tumble-polished aluminum with Black™ metering blocks and base plate. The Aluminum Ultra XP Circle Track carbs are available in 650 & 750 CFM's. Holley Ultra XP carburetors are Specifically Calibrated for Circle Track & offer new features such as anti-siphon valve in the main body; 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, wedge floats, adjustable secondary linkage and knurled (hand adjustable) curb idle screws. Holley Ultra XP carburetors are the ultimate in square bore race carburetors!
Features:
  • Aluminum Construction (saves 4.5 lbs - 38% weight savings)
  • Hard Core Gray with black anodized billet aluminum metering block and booster inserts
  • Calibrated specifically for use on circle track
  • Has a set screw in the base plate for wide open throttle stop adjustment
  • PTFE coated throttle shafts rides in oil impregnanted bronze bushings for smooth throttle actuation
  • Anti-siphon valve in main body to reduce pump pullover
  • 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)
  • 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
  • -8 (o-ringed) inlet threads offer a large variety of plumbing options and can be plumbed from either side; comes from the factory with 8AN inlet fittings
  • 4 corner idle allows you to precisely control your idle system
  • Internal pump passage in metering block equipped with a tunable bleed off for further tuning of accelerator pump
  • 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
  • Set up with 1:1 throttle actuation
  • Baseplate designed with a boss that can be consumer machined for vacuum source
  • Includes wedge floats
  • 100% wet-flow tested by Holley technicians to assure it arrives ready to run!
This carburetor was designed with a dual mounting pattern, so that it can be installed on a manifold machined for a 4150 or 4500 series carburetor.
Installation Notes:
This carburetor was designed with a dual mounting pattern, so that it can be installed on a manifold machined for a 4150 or 4500 series carburetor.

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!

Downloads:

Download Name File Size
199r10766.pdf781.28KB

Videos:

Specifications:

Barrels 4
Billet Color Hard Core Gray with Black
Booster Down Leg
Booster Type Down Leg
Carburetor Use Professional Race
CFM 650
Choke None
Circuit 2
Condition NEW
Emission Code 3
Finish Hard Core Gray
Fuel Gasoline
Fuel Inlet Dual
Marine Use No
Material Aluminum
Model 4150
Part Type Carburetor
Primary Main Jet 74
Primary Power Valve 6.5
Primary Pump Nozzle Size 32
Product Type Carburetor
Proposition 65 www.P65Warnings.ca.gov
Secondaries Mechanical
Secondary Main Jet 82
Secondary Pump Nozzle Size 31
Supercharged Application No
Throttle Bore 1.688 inch
Venturii Size 1.250 inch
Warranty Limited 90 Day

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Holley 4150 ALUM ULTRA XP 650 CFM CIRCLE TRACK-HARD BLACK 0-80812HBX:
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