Holley MDL 4150 700CFM D/P-CHROMATE

If you're looking to boost your ride's performance, the Holley Double Pumper® carburetor is a fantastic choice for hot street cars and race vehicles alike. These carburetors have become an American classic, originally gracing many factory muscle cars and now powering countless vehicles to victory on the track. Whether you’re tearing up the streets or racing down the quarter mile, the Double Pumper is ready to deliver.

Designed specifically for lightweight vehicles, this carburetor shines when paired with a manual transmission or an automatic transmission that has a high stall and low rear-end gears. You can choose between a stunning gold dichromate finish or a polished shiny look, both of which are not just about aesthetics but also provide durability. With dual accelerator pumps, you’ll enjoy an extra boost of fuel during those crucial moments of acceleration. It also features 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, trust the experts. Holley has been a leader in the modular carburetor industry for over a century and has powered every NASCAR champion since the 1960s.

Important Downloads:

• Instructions for Part# 0-4778C
• Carburetor Numerical Listing for Part #0-4778C

Features:

• Gold Dichromate finish for corrosion resistance and classic Holley style
• Optimized street/strip calibration that works right out of the box
• Manual choke (cable driven, hand-operated) for precise control during cold starts
• Mechanical secondaries for impressive tire-spinning performance
• Dual accelerator pumps providing extra fuel during initial acceleration
• Dual feed fuel inlets ensuring constant high-volume fuel delivery
• Designed for lightweight vehicles with manual transmissions or automatics with high stall & low gearing
• 100% wet-flow tested by Holley technicians to guarantee it's ready to run!

Specifications:

• Barrels: 4
• Booster: Straight
• CFM: 700
• Choke: Manual
• Emission Code: 3
• Finish: Gold Dichromate
• Fuel: Gasoline
• Fuel Inlet: Dual
• Material: Zinc
• Model: 4150
• Primary Main Jet: 69
• Primary Power Valve: 6.5
• Primary Pump Nozzle Size: 28
• Product Type: 4150 Model Carburetor
• Secondaries: Mechanical
• Secondary Main Jet: 78
• 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 style carburetors with a 5 3/16" x 5 5/8" bolt pattern. If your intake manifold is a spreadbore style, you'll need an adapter for installation, similar to the Mr. Gasket #1932.