Holley MDL 4150 750CFM D/P-CHROMATE Carburetor

If you're looking to boost your ride's performance, the Holley Double Pumper® carburetor is an outstanding choice for hot street cars and racing machines. This iconic carburetor has a rich history, powering everything from classic muscle cars to modern performance vehicles, making it a trusted companion whether you're hitting the streets or tearing up the quarter mile.

The Double Pumper is designed with lightweight vehicles in mind, whether you have a manual transmission or an automatic with a high stall and low rear-end gears. You can choose between a stunning gold dichromate finish or a polished shiny look. This carburetor features dual accelerator pumps that provide extra fuel right when you need it, mechanical secondaries for impressive performance, dual feed fuel inlets for consistent high-volume fuel delivery, and a manual choke that makes warming up your engine a breeze.

When it comes to performance, you want a name you can trust. Holley has been a leader in the modular carburetor industry for over a century, powering every NASCAR champion since the 1960s.

Important Downloads:

• Instructions for Part# 0-4779C
• Carburetor Numerical Listing for Part #0-4779C

Features:

• Gold Dichromate finish for corrosion resistance and classic Holley style
• Optimized street/strip calibration that’s ready to go right out of the box
• Manual choke (cable driven, hand-operated) for precise cold start control
• Mechanical secondaries for fantastic performance
• 4 corner idle for fine-tuning your idle system
• Dual accelerator pumps for extra fuel during initial acceleration
• Dual feed fuel inlets for reliable high-volume fuel delivery
• Designed for lightweight vehicles with manual transmissions or automatics featuring high stall & low gearing
• 100% wet-flow tested by Holley technicians to ensure it’s ready to run!

Specifications:

• Barrels: 4
• Booster: Down Leg
• CFM: 750
• Choke: Manual
• Emission Code: 3
• Finish: Gold Dichromate
• Fuel: Gasoline
• Fuel Inlet: Dual
• Material: Zinc
• Model: 4150
• Primary Main Jet: 70
• Primary Power Valve: 6.5
• Primary Pump Nozzle Size: 28
• Product Type: 4150 Model Carburetor
• Secondaries: Mechanical
• Secondary Main Jet: 80
• Secondary Pump Nozzle Size: 31
• 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 and can replace Holley, Edelbrock, Carter AFB, and Autolite carburetors with a 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.