HOLLEY part description

Product Description

Double Pumper Carburetor

Application Summary

0-4779C Manual Choke Mechanical Secondar

Features & Benefits

  • Gold Dichromate Finish For Corrosion Resistance w/Classic Look
  • Optimized Street/Strip Calibration That Works Out Of The Box
  • Manual Choke For Precise Cold Start Control
  • Mechanical Secondaries For Awesome Tire Turning Performance
  • 4 Corner Idle Allows You To Precisely Control Your Idle System
  • Dual Accelerator Pumps For Add. Fuel Under Initial Acceleration
  • Dual Feed Fuel Inlets For Constant High Volume Fuel Delivery
  • Lightweight Vehicles w/Auto Trans w/High Stall/Low Gearing
  • 100% Wet Flow Tested By Holley Technicians
  • Arrives Ready To Run

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

Product Attributes

Barrel Four
Booster Type Down Leg
Carburetor Type 4150
CFM 750
Choke Manual
Emission Without EGR
Finish Dichromate
Flange Square Bore
Fuel Inlet Dual
Fuel Type Gasoline
Material Zinc
Primary Main Jet 70
Primary Power Valve 6.5
Secondary Main Jet 80
Secondary Pump Nozzle Size 31
Secondary Type Mechanical
Supercharged Application No
Throttle Bore 1.688 in.
Type Automotive
Usage Street/Strip
Vacuum Port Quantity 1 timed (spark); 1 full; 1 PCV

Additional Information

Country of Origin (Primary) US
Harmonized Tariff Code (Schedule B) 8409915085
Harmonized Tariff Code (HTS) 8409915085
NAFTA Preference Criterion Code B
Remanufactured Part N
UPC 00090127471067
Holley® has been the undisputed leader in fuel systems, powering nearly every NHRA Pro-Stock champion and Monster Energy NASCAR Cup team with its expansive line of carburetors for over 40 years. Today, its EFI products and products for GM's popular LS engine are what dominate the performance world and the LS scene respectively. But aside from carburetors, Holley is also widely recognized for its intake manifolds, performance fuel pumps, and engine dress-up products. And to better serve its customers, it partnered with numerous other companies, such as MSD, a company developing electronics for the entire powertrain, and Powerteq, the world leader in performance tuning in the automotive market.

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