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Holley®  |  SKU: 0-80908HB

Holley® #0-80908HB Gen 3 Ultra Dominator 4-Barrell Carburetor (1250 CFM - 4500 - Mechanical Secondaries - Hard Core Gray - Gasoline)

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$2,009.95
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Description

New or modified fuel lines are required (if replacing existing Holley Dominator 4500 series carburetor - previous bowl machining was 7/8-20, Aluminum Ultra Dominator carburetors come assembled with -6AN to SAE 8 port fittings). Center to center fuel inlet measurement is now 11.5"

The original Dominator® took carburetion to another level in 1969 when it was developed for NASCAR® racing. It has been refined over the years and has received its biggest change ever. The Gen 3 Ultra Dominator features a brand new main–body, brand new state–of–the–art calibrations, high volume fuel bowls and sizes up to 1475 CFM! The patent pending GEN 3 main–body is 5/16" taller than the previous generation! This new height allowed for larger radius air entries which were optimized using Computational Fluid Dynamics (CFD) software to deliver smoother flow into new fully machined, big bore venturii. The main-body also features an integrated idle bypass valve that allows for idle adjustments while maintaining the correct throttle plate to transfer slot relationship as well as an extended air cleaner flange for easy air scoop attachment when using the available air scoop adapter. The Gen 3 utilizes 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, 12 hole billet booster inserts, fully tunable billet metering blocks, adjustable external linkage, throttle position sensor mounting points and knurled (hand adjustable) curb idle screws Each calibration has been dyno and track tested to deliver proven performance!

  • All aluminum construction saves 3.8lbs. over original models (28% weight savings)

  • Hard Core Gray with black anodized billet aluminum metering block and booster inserts

  • Designed for use on Drag race, Pro Street, or any high horsepower engines

  • Calibrations optimized for today's larger race engines and new fuels

  • Fully machined from venturii throat to throttle bore for predictable & repeatable performance

  • Integrated idle bypass valve allows for adjustment of idle while maintaining correct throttle plate to transfer slot relationship

  • 12 hole billet booster inserts for superior atomization and crisp throttle response

  • Metering blocks feature improved durability, true gasket sealing and fully adjustable (emulsion bleeds, power valve channel restrictors & idle feed restrictors)

  • Dual 50cc 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

  • Factory ready TPS mounting points for use with data acquisition systems (Holley TPS P/N 534-214 available)

  • Knurled (hand adjustable) primary and secondary curb idle screws allow for easy idle adjustment without the use of tools

  • Contoured hex head squirter screws for streamlined airflow

  • 100% wet-flow tested by Holley technicians to assure it arrives ready to run!

  • Fully adjustable stainless steel external linkage can be adjusted for 1:1 progressive, or soft progressive throttle activation. No linkage parts under the carburetor

Barrel Quantity 4
Barrels 4
Billet Color Hard Core Gray with Black
Body Color Hard Core Gray
Body Finish E-Coated
Booster Annular Billet Insert
Booster Design Annular
Brand Holley
Carburetor Material Aluminum
Carburetor Use Professional Race
CFM 1250
Choke None
Circuit 3
Condition New
Cubic Feet Per Minute Rating 1250
Emission Code 4
Finish Hard Core Gray
Flange Type Dominator/4500
Fuel Gasoline
Fuel Inlet Dual
Grade Type Performance
High Speed Air Bleed 34
Idle Air Bleed Size 51
Intermediate Air Bleed 70
Linkage Attached Yes
Marine Approved No
Marine Use No
Material Aluminum
Model 4500
Mounting Hole Quantity 4
Needle and Seat Size 120;120
Primary Jet Diameter 92
Primary Main Jet 92
Primary Power Valve 5.5
Primary Pump Nozzle Size 40
Product Type Carburetor
Sale Category Carburetors and Components
Secondaries Mechanical
Secondary Main Jet 102
Secondary Pump Nozzle Size 40
Spacer Included No
Supercharged Application No
Throttle Bore 2.125 inch
Venturii Size 1.880 inch
Warranty Limited 90 Day
UPC 090127684603
Part Number 0-80908HB

ABOUT HOLLEY PERFORMANCE

For over a century Holley has driven the cutting edge of fuel-system design. That work continues today through Holley’s market-leading EFI products as well as through Holley’s family of best-in-industry brands. Top brands like MSD, Flowmaster, Hurst, Accel, and many more make up the industry’s leading offering of enthusiast-driven products to deliver robust, complete performance solutions for builders, racers, and drivers. From propelling the LS-, Coyote-, and Gen 3 Hemi-swap trends, to continuously innovating late-model and vintage vehicle performance, Holley’s commitment to its customers and their cars is at the core of everything we do.

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