Holley Carburetor Ultra Dominator GEN 3 1050 CFM 1X4 Gas 2-Circuit Metering-4500

The biggest changes to the Holley 1 x 4 Gas 2-Circuit Metering-4500 1050 CFM GEN 3 Ultra Dominator Carburetor include a Gen 3 main body, performance-driven calibrations and higher volume fuel capacity! The refined components feature an integrated fuel shelf and internal baffling in the fuel bowl, as well as an integrated idle bypass valve to maintain the correct throttle plate to transfer slot relationship. 

Features and Benefits:
- All Aluminum Construction (28% weight savings)
- Shiny Coating with Red Anodized Billet Aluminum Metering Block/Booster Inserts
- Designed for use on Drag Race, Pro Street, or any High Horsepower Engines
- Calibrations optimized for Larger Race Engines and New Fuels
- Fully Machined from Venturii Throat to Throttle Bore
- Integrated Idle Bypass Valve for Adjustment and Correct Throttle Plate to Transfer Slot Relationship
- 12-hole Billet Booster Inserts for Superior Atomization and Crisp Throttle Response
- Durable Metering Blocks and True Gasket Sealing
- Fully Adjustable Emulsion Bleeds, Power Valve Channel Restrictors & Idle Feed Restrictors
- Dual 50CC Accelerator Pumps provide Ideal Fuel from Idle to Full Throttle
- 20% Fuel Capacity Increase w/ Controlled Internal Baffling Fuel Slosh
- Dual Clear Sight Windows for Simple Fuel Level Adjustments
- Quick and Easy Front Center Built-In Drain Plug in
- (-8) O-ringed Inlet Threads for Variety of Plumbing Options
- Factory-Ready TPS Mounting Points for use with Data Acquisition Systems 
- Knurled (hand adjustable) Primary and Secondary Curb Idle Screws
- Contoured Hex Head Squirter Screws for Streamlined Airflow
- 100% Wet-Flow tested by Holley Techs
- Fully Adjustable Stainless Steel External Linkage for 1:1 Progressive or Soft Progressive Throttle Activation

All it takes is a 5/16 of an inch for the Gen 3 main body to improve fuel aeration and slosh control. This new height allows larger radius air entries which were optimized using Computational Fluid Dynamics (CFD) software for smoother flow into a new fully machined, big bore venturii.

Holley's Dominator series considers it all, including an air scoop adapter, an extended air cleaner flange, 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.

*Holley's TPS Data Acquisition System (P/N: HL534214) is available for mounting.