Holley 0-80541-1 Carburetor

Part Number
HP Classic Race Carburetor; 4 bbl; 650 cfm; Model 4150 HP; 2 Circuit Metering; Mech. Secondary; DualFuelInlet; Gas; Dbl AcceleratorPump; Nascar Approved; Gold Dichromate Finish
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Competition fuel curves provide safe and reliable horsepower for high performance race engines.

BRAND: Holley


  • Holley HP™ carburetors have been the standard in racing carburetors for nearly two decades. Powering the biggest names in NASCAR to the Saturday night racer; HP carburetors are the perfect choice for all types of motorsports. Classic HP carburetors are available from 390 to 1000 CFM and feature a contoured venturii inlet for balanced air flow; screw in air bleeds for precision tuning capabilities; high flow metering blocks and Dominator style fuel bowls which allow pluming from either side for ease of installation. Holley HP carburetors are the standard for square bore race carburetors. Race-Ready out of the box!
  • HP™ Classic Race Carburetor
  • Gold Dichromate Finish For Corrosion Resistance
  • Progressive Secondaries For Perfect Off The Line Launches
  • Screw In Air Bleeds For Precision Tuning Capabilities
  • Holley Performance Emission Code 3: This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles and Racing Use Only Vehicles. The following vehicles are considered Uncontrolled (Non-Emissions Controlled) Vehicles: 1965 and older U.S. manufactured California Certified vehicles/1967 and older U.S. manufactured Federally Certified vehicles/1967 and older Foreign manufactured vehicle. The following vehicles are considered Racing Use Only Vehicles: Racing Use Only Vehicles are vehicles that are used exclusively for competition and that are not registered and that may never be used on the street. WARNING: It is against the law to install this part on an Emissions Controlled Vehicle. The following vehicles are considered Emissions Controlled Vehicles: 1966 and newer U.S. manufactured California Certified vehicles/1968 and newer U.S. manufactured Federally Certified vehicles/1968 and newer Foreign manufactured vehicle
  • Calibrated For Gasoline
  • Includes Notched Float and Jet Extensions
  • Stainless Steel Throttle Plates
  • HP™ Classic Race Carburetor; 4 bbl; 650 cfm; Model 4150 HP; 2 Circuit Metering; Mech. Secondary; DualFuelInlet; Gas; Dbl AcceleratorPump; Nascar Approved; Gold Dichromate Finish;
  • 100% Wet Flow Tested By Holley Technicians
  • 4 Corner Idle Allows You To Precisely Control Your Idle System
  • Contoured Venturi Inlet Balances Airflow For Increased hp
  • Dual 30cc Accelerator Pumps
  • Dual Feed Fuel Inlets For Constant High Volume Fuel Delivery
  • Optimized Race Calibration


Booster TypeStraight
Carburetor Type4150
EmissionWithout EGR
FinishGold Dichromate
FlangeSquare Bore
Fuel InletDual
Fuel TypeGasoline
Primary Main Jet70
Primary Power Valve6.5
Secondary Main Jet70
Secondary Power Valve6.5
Secondary Pump Nozzle Size29
Secondary TypeMechanical
Supercharged ApplicationNo
Throttle Bore1.688 in.
Venturii Size1.250 in.
WARNING CA Proposition 65Yes
WARNING CA Proposition 65 MessageWARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov



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