Holley 4150 600CFM Universal Double Pumper Carburetor

If you're looking to amp up your hot street car or race vehicle, the Holley Double Pumper® carburetor is just what you need. These carburetors have become a staple in the performance world, celebrated for their impressive capabilities. From their beginnings as the go-to carburetor for many classic muscle cars to their role in helping countless racers cross the finish line, the Double Pumper is a fantastic option whether you're tearing up the streets or tackling the quarter mile.

This carburetor shines in lightweight vehicles, especially those equipped with a manual transmission or an automatic transmission that features a high stall and low rear-end gears. You can choose between a sleek gold dichromate finish or a stunningly polished shiny look. With dual accelerator pumps, you'll get that extra fuel boost right when you need it, while the mechanical secondaries ensure top-notch performance. Plus, the dual feed fuel inlets guarantee a steady supply of high-volume fuel, and the manual choke makes warming up your engine a breeze.

When it comes to performance, you want to trust a name with a legacy. Holley has been in the carburetor game for over a century and has powered every NASCAR champion since the 1960s.

Important Downloads:

• Instructions for Part# 0-4776S
• Carburetor Numerical Listing for Part #0-4776S

Features:

• Eye-catching shiny finish
• Street/strip calibration that works right out of the box
• Manual choke (cable-driven, hand-operated) for precise cold start control
• Mechanical secondaries for impressive tire-spinning performance
• Dual accelerator pumps for that extra fuel boost at initial acceleration
• 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
• Each unit is 100% wet-flow tested by Holley technicians to ensure it's ready to run!

Specifications:

• Barrels: 4
• Booster: Straight
• CFM: 600
• Choke: Manual
• Emission Code: 3
• Finish: Shiny
• Fuel: Gasoline
• Fuel Inlet: Dual
• Material: Aluminum
• Model: 4150
• Primary Main Jet: 66
• 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: 31
• Supercharged Application: No
• Throttle Bore: 1.563 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 compatible with Holley, Edelbrock, Carter AFB, and Autolite style carburetors that have a 5 3/16" x 5 5/8" bolt pattern. If your intake manifold has a spreadbore style, you will need an adapter for installation, like the Mr. Gasket #1932.