850 CFM DOUBLE PUMPER CARBURETOR

$538.95
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SKU:
HOL0-4781-SA
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0-4781SA Manual Choke Mechanical Secondaries-4150

 

Holley's new 0-4781SA is constructed from aluminum which compared to its zinc counterpart. Holley's aluminum 0-4781SA will hold its shine longer and also can be hand polished for a custom look! 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:

  • Vibratory polished aluminum for good looks, weight savings and long lasting shine
  • 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
  • 4 corner idle allows you to precisely control your idle system
  • 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!
Barrels 4
Booster Down Leg
Brand Holley
CFM 850
Choke Manual
Emission Code 3
Finish Shiny
Fuel Gasoline
Fuel Inlet Dual
Material Aluminum
Model 4150
Primary Main Jet 80
Primary Power Valve 6.5
Primary Pump Nozzle Size 31
Product Type 4150 Model Carburetor
Secondaries Mechanical
Secondary Main Jet 80
Secondary Pump Nozzle Size 31
Supercharged Application No
Throttle Bore 1.688 inch
Vacuum Ports 1 timed (spark) port, 1 full, and 1 PCV port
Part Number 0-4781SA

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