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 boost pressure, 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

Additional Attributes:

• GTIN: 00090127619384
• Usage: Street/Strip
• Venturii Size: 1.250 in.
• WARNING CA Proposition 65: Yes
• WARNING CA Proposition 65 Message: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
• Barrel: Four
• Booster Type: Straight
• Carburetor Type: 4150
• CFM: 600
• Choke: None
• Circuit: 2
• Emission: Without EGR
• Finish: Gold Dichromate
• Flange: Square Bore
• Fuel Inlet: Dual
• Fuel Type: Gasoline
• Material: Zinc
• Primary Main Jet: 73
• Primary Power Valve: 10.5
• Secondary Main Jet: 73
• Secondary Power Valve: 10.5
• Secondary Pump Nozzle Size: 29
• Secondary Type: Mechanical
• Supercharged Application: Yes
• Throttle Bore: 1.563 in.
• Type: Automotive

Extened Information:

• Emissions : Electronically Announced
• Life Cycle Status: Available To Order

Packaging:

• Quantity of Each:
• Package UOM:
• Dimension: 12.2500 x 11.0000 x 7.5000 inches

PDF: