Holley

Holley 850 CFM Competition Double Pumper Carburetor #0-9380

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No Choke Mechanical Secondaries-4150
Holley Competition Double Pumper® carburetors are a perfect performance upgrade for 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 Competition Double Pumper is designed for use on all out race vehicles that are lightweight with a manual transmission or an automatic transmission with a high stall and low rear end gears. The Competition Double Pumper is available in a gold dichromate 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 no choke for maximum airflow. 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.

Installation Notes: This model of carburetor has the square bore flange bolt pattern. It can replace Holley, Edelbrock, Carter AFB, and Autolite style carburetors with 5 3/16" x 5 5/8" bolt pattern. If you have a spreadbore style intake manifold, you will need an adapter to install this carburetor. Similar to the Mr. Gasket #1932.

Features:

  • Gold Dichromate finish for corrosion resistance and classic Holley looks
  • 100% wet-flow tested by Holley technicians to assure it arrives ready to run!
  • Optimized competition fuel curve provides safe and reliable horsepower
  • No choke for maximum airflow
  • Annular style booster for superior atomization and crisp throttle response
  • Mechanical secondaries for awesome tire turning performance
  • Dual accelerator pumps for additional fuel under initial acceleration
  • 4 corner idle allows you to precisely control your idle system
  • Dual feed fuel inlets for constant high volume fuel delivery
  • Intended for lightweight vehicles w/ manual trans or automatics with high stall & low gearing
Barrels 4
Booster Annular
Brand Holley
CFM 850
Choke None
Emission Code 3
Finish Gold Dichromate
Fuel Gasoline
Fuel Inlet Dual
Material Zinc
Model 4150
Primary Main Jet 78
Primary Power Valve 6.5
Primary Pump Nozzle Size 31
Product Type 4150 Model Carburetor
Secondaries Mechanical
Secondary Main Jet 78
Secondary Pump Nozzle Size 31
Supercharged Application No
Throttle Bore 1.750 inch
Warning California Proposition 65
Warranty Limited 90 Day

Click here for Instructions for Part# 0-9380

Click here for Carburetor Numerical Listing for Part #0-9380