Overview of a Holley 4150 mechanical secondary carburetor, Double PumperYouTube Button

830 CFM Classic HP Carburetor

Mechanical Secondary NASCAR Legal

PART# 0-80509-1

Suggested Retail: $744.95
Your Price: $669.95
Free Shipping on orders over $100*


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!


  • Gold Dichromate finish for corrosion resistance
  • 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
  • Stainless steel throttle plates
  • Calibrated for gasoline
  • 100% wet-flow tested by Holley technicians to assure it arrives ready to run!


BoosterDown Leg
Emission Code3
FinishGold Dichromate
Fuel InletDual
Product TypeCarburetor
Supercharged ApplicationNo
Throttle Bore1.688 inch
Venturii Size1.561 inch
WarningCalifornia Proposition 65

Tech Resources

Parts & Kits


This part is legal for use on Uncontrolled (Non-Emissions Controlled) Vehicles or Racing 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

Racing Vehicles are vehicles that are used exclusively for racing or other forms of competition that are not registered and that may never be used on the street.

WARNING FOR 0-80509-1: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
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    Some parts are not legal for use in California or other states with similar regulations.