Holley 0-80903BK Gen 3 Ultra Carburetor, 1050 CFM Dominator, 3 Circuit, Mechanical, Polished/Black, Each

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 is now receiving its biggest change ever. Introducing the ALL NEW Gen 3 Ultra Dominator! The Gen 3 features a brand new main-body, brand new state-of-the-art calibrations, high volume HP fuel bowls and sizes up to 1475 CFM!

The new 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 venturi.

Each calibration has been dyno and track tested to deliver proven performance!

Installation Notes: Air cleaner flange extended - designed for use with new air scoop Adapter in clear (p/n 17-84) or black anodized (p/n 17-85)

Features

• For 1 x 4 Carburetor Set-up (3-Circuit Metering)
• 1.690" venturi, 2.00" throttle bore
• All new calibrations optimized for today's larger engines and new fuels
• Fully machined from venturi throat to throttle bore for predictable & repeatable performance
• Designed for use on Drag race, Pro Street, or any high horsepower engines
• All aluminum construction saves 3.8lbs. over original models (28% weight savings)
• Integrated idle bypass valve allows for adjustment of idle while maintaining correct throttle plate to transfer slot relationship
• Factory ready TPS mounting points for use with data acquisition systems (Holley TPS P/N 534-214 available)
• Fully adjustable stainless steel external linkage can be adjusted for 1:1 progressive, or soft progressive throttle activation. No linkage parts under the carburetor
• 12 hole billet booster inserts for superior atomization and crisp throttle response
• 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
• Dual 50cc accelerator pumps
• New modified skirt boosters on 1350 & 1475 maintains strong fuel signal on large CFM carbs

PROVEN HOLLEY HP 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 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
• Contoured entry provides smooth fuel flow directly to needle & seat
• -8(o-ringed) inlet threads offer a large variety of plumbing options (come standard with -8 o-ring to -6AN male adapter and -8 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

6061T6 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 internally drilled eliminating need for external plug
• Excess material removed for increased fuel capacity
• New snap in place bowl vent whistle makes removal and/or replacement easier