Supercharger Carburetor; 4 bbl; 600 cfm; Model 4150; Manual Choke; Gasoline; Dual Fuel Inlet; Mech Secondary; 1.563 in. Throttle Bore; Shiny Finish;

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 i s designed for use on lightweight vehicles with a manual transmission or an automatic transmission with a high stall and low rear end gears. The Supercharger Double Pumper with a 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. These carburetors that are intended for use with superchargers, and have a unique capability that allows their power valves to reference the intake manifold vacuum below the supercharger. This allows the power valve to operate as it should, based off intake manifold vacuum. A power valve provides further enrichment to the main metering system under load (low vacuum) conditions. Without this external referencing, the power valve would be reading the supercharger vacuum, which has no bearing on the engine load.

• Tumble Polished Shiny Finish For Good Looks
• Manual Choke For Precise Cold Start Control
• Dual Accelerator Pumps For Add Fuel Under Initial Acceleration
• Dual Feed Fuel Inlets For Constant High Volume Fuel Delivery
• Mechanical Secondaries For Perfect Off The Line Launches
• Lightweight Vehicles W/Auto Trans W/High Stall/Low Gearing
• Boost Power Valve For Proper Enrichment Under Acceleration
• 100% Wet Flow Tested By Holley Technicians
• Arrives Ready To Run

Barrel:	Four
Booster Type:	Straight
Carburetor Type:	4150
CFM:	600
Choke:	Manual
Emission:	Without EGR
Finish:	Shiny
Flange:	Square Bore
Fuel Inlet:	Dual
Fuel Type:	Gasoline
Material:	Zinc
Primary Main Jet:	68
Primary Power Valve:	6.5
Secondary Main Jet:	76
Secondary Power Valve:	N/A
Secondary Type:	Mechanical
Supercharged Application:	Yes
Throttle Bore:	1.563 in.
Type:	Automotive
Usage:	Street/Strip
WARNING CA Proposition 65:	Yes
WARNING CA Proposition 65 Message:	WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov