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800 CFM Double Pumper Carburetor

Manual Choke Mechanical Secondaries-4150

Part # 0-4780C Be the first to write a review

800 CFM Double Pumper Carburetor

Estimated Ship Date: 04/19/2024
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3

Emissions

This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles.

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Holley Double Pumper® carburetors are a perfect performance upgrade for hot street cars and race vehicles. Double Pumper carburetors are an American icon when it comes to performance carburetors. From their roots as the premier carburetor on many factory muscle cars to powering thousands of vehicles across the finish line, the Double Pumper is a great choice whether you are burning up the street or the quarter mile. The Double Pumper is designed for use on lightweight vehicles with a manual transmission or an automatic transmission with a high stall and low rear end gears. The Double Pumper is available in a gold dichromate or tumble polished shiny finish and features dual accelerator pumps for additional fuel under initial acceleration; mechanical secondaries for great performance; dual feed fuel inlets for constant high volume fuel delivery and a manual choke for easy control of engine warm up. Don't trust your performance to just anyone, Holley is the only modular carburetor company that has been in business for over 100 years and has powered every NASCAR champion since the 60's.

Features:

  • Gold Dichromate finish for corrosion resistance and classic Holley looks
  • Optimized street/strip calibration that works out-of-the-box
  • Manual choke (Cable driven, hand operated) for precise cold start control
  • Mechanical secondaries for awesome tire turning performance
  • Dual accelerator pumps for additional fuel under initial acceleration
  • Dual feed fuel inlets for constant high volume fuel delivery
  • Intended for lightweight vehicles w/ manual trans or automatics with high stall & low gearing
  • 100% wet-flow tested by Holley technicians to assure it arrives ready to run!

About Holley

Looking for Holley performance products? We're the undisputed leader in carburetors, fuel pumps, fuel injection, intake manifolds, and more. Buy now!

Barrels4
BoosterDown Leg
Brand Holley
Carburetor UsePerformance and Race
CFM800
ChokeManual
ConditionNew
Emission Code3
FinishGold Dichromate
FuelGasoline
Fuel InletDual
Marine UseNo
MaterialAluminum
Model4150
Primary Main Jet71
Primary Power Valve6.5
Primary Pump Nozzle Size31
Product TypeCarburetor
Sale CategoryCarburetors and Components
SecondariesMechanical
Secondary Main Jet85
Secondary Pump Nozzle Size31
Supercharged ApplicationNo
Throttle Bore1.688 inch
Vacuum Ports1 timed (spark) port, 1 full, and 1 PCV port
WarrantyLimited 90 Day
UPC090127471074
Part Number0-4780C
3

This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) 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


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
Notice - 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.
Limited 90 Day: See Details
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    Some parts are not legal for use in California or other states with similar regulations.