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Holley 4500 1250 CFM 3 CIR - HARD BLACK


Regular price $1,898.71

  • All aluminum construction saves 3.8lbs. over original models (28 Percent weight savings)
  • Fuel bowls provide 20 Percent 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 Percent 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
  • 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

Additional Attributes:

  • GTIN: 00090127684603
  • Emission Code Description: Legal for Racing Use Only
  • Emission Code: 4
  • Finish: Hard Core Gray
  • Fuel Inlet: Dual
  • Fuel: Gasoline
  • High Speed Air Bleed: 34
  • Idle Air Bleed Size: 51
  • Intermediate Air Bleed: 70
  • Marine Use: No
  • Material: Aluminum
  • Model: 4500
  • Needle and Seat Size: 120;120
  • Primary Main Jet: 92
  • Primary Power Valve: 5.5
  • Primary Pump Nozzle Size: 40
  • Secondaries: Mechanical
  • Secondary Main Jet: 102
  • Secondary Pump Nozzle Size: 40
  • Supercharged Application: No
  • Throttle Bore: 2.125 inch
  • Venturii Size: 1.880 inch
  • Barrels: 4
  • Billet Color: Hard Core Gray with Black
  • Booster: Annular Billet Insert
  • CFM: 1250
  • Choke: None
  • Circuit: 3
  • Condition: New


  • Quantity of Each: 1
  • Package UOM: EA
  • Dimension: 14.25 x 12.38 x 9.13 inches