Holley Pro Series Carburetor - 390 CFM Four Barrel - Model 4150 HP

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SKU: HLY0-80507-1
Carburetor, Model 4150, 4-Barrel, 390 CFM, Square Bore, No Choke, Mechanical Secondary, Dual Inlet, Gold Chromate, Each

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Regular price $435.06
Regular price Sale $1,041.95 Sale price $435.06
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Holley Pro-Series HP Carburetors set the standards by which all competition carbs are judged. Built only for all-out performance, Pro-Series 4150 Carburetors perform like the more expensive "modified" carburetors at a considerably lower cost. To greatly improve air flow, airhorn and choke towers have been removed, venturi sections have been modified, and the through-holes have been machined to . 440". Improved main metering circuitry. Pro Series carbs have been fit with 4500 Dominator fuel bowls, high flow power valves, and accelerator pumps equipped with severe usage diaphragms. This four barrel carburetor flows 830 cfm and is hand-built by Holley technicians. Wet flow tested from idle to full throttle in simulated racing conditions. Features fully-contoured main body, redesigned metering blocks, and high flow needle and seat assemblies. NASCAR approved.

Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors powered every 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!

NOTE: Due to the natural color variations of the dichromate plating process, the plating color may vary from casting to casting (within a carburetor) and from carburetor to carburetor. This is considered normal and is not a cosmetic defect. If you desire a carburetor with no color variation, please shop our black and shiny finish carburetors.

  • Optimized race calibration
  • Contoured venturri inlet offers balanced airflow for increased horsepower
  • Screw in air bleeds for precision tuning capabilities
  • Dual 30cc accelerator pumps for additional fuel under initial acceleration
  • Dual feed fuel inlets for constant high volume fuel delivery
  • 4 corner idle allows you to precisely control your idle system
  • Progressive Secondaries for perfect off the line launches
  • Steel throttle plates
  • Calibrated for gasoline
  • 100% wet-flow tested by Holley technicians to assure it arrives ready to run!
  • Product Description:

  • Carburetor
  • Classic
  • Model 4150
  • 4-Barrel
  • 390 CFM
  • Square Bore
  • No Choke
  • Mechanical Secondary
  • Dual Inlet
  • Aluminum
  • Gold Chromate
  • Sold Individually
  • 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.