Holley 4150 ALUM DP 650 Electric Choke Carburetor

Holley has taken their two most popular double pumper carburetors and given them a fantastic upgrade with electric chokes. You can choose between the 650 and 750 CFM models, available in classic zinc or a stunning polished finish.

The Holley Double Pumper® carburetors are an ideal choice for those looking to boost their hot street cars or race vehicles. Known as an American classic, these carburetors have a rich history, powering many factory muscle cars and helping countless vehicles cross the finish line. Whether you're tearing up the streets or hitting the quarter mile, the Double Pumper is a reliable option, especially for lightweight vehicles with manual transmissions or automatics that have high stall and low rear end gears.

Available in either a gold dichromate or a beautifully tumble polished finish, this carburetor features dual accelerator pumps that provide extra fuel during initial acceleration. With mechanical secondaries for impressive performance, dual feed fuel inlets ensuring a steady high-volume fuel delivery, and an electric choke for effortless engine warm-up control, this carburetor is designed with performance in mind. Trust your performance needs to Holley, the only modular carburetor company with over a century of experience and a history of powering every NASCAR champion since the 1960s.

Important Downloads:

• Instructions for Part# 0-4777SAE
• Carburetor Numerical Listing for Part #0-4777SAE

Features:

• Shiny finish for corrosion resistance and that classic Holley look
• Optimized street/strip calibration that works right out of the box
• Electric choke for accurate cold start control
• Mechanical secondaries for thrilling tire-spinning performance
• Dual accelerator pumps for an extra boost of fuel when you need it
• Dual feed fuel inlets for consistent high-volume fuel delivery
• Designed for lightweight vehicles with manual transmissions or automatics featuring high stall and low gearing
• 100% wet-flow tested by Holley technicians to ensure it's ready to run!

Specifications:

• Barrels: 4
• Booster: Straight
• CFM: 650
• Choke: Electric
• Emission Code: 3
• Finish: Shiny
• Fuel: Gasoline
• Fuel Inlet: Dual
• Material: Aluminum
• Model: 4150
• Primary Main Jet: 67
• Primary Power Valve: 6.5
• Primary Pump Nozzle Size: 28
• Product Type: 4150 Model Carburetor
• Secondaries: Mechanical
• Secondary Main Jet: 73
• Secondary Pump Nozzle Size: 28
• Supercharged Application: No
• Throttle Bore: 1.688 inch
• Vacuum Ports: 1 timed (spark) port, 1 full, and 1 PCV port
• Warranty: Limited 90 Day

Notes:

• This carburetor features a square bore flange bolt pattern, making it a suitable replacement for Holley, Edelbrock, Carter AFB, and Autolite style carburetors with a 5 3/16" x 5 5/8" bolt pattern. If your intake manifold is of the spreadbore style, an adapter will be necessary for installation, similar to the Mr. Gasket #1932.