Holley 0-76650BK Ultra Double Pumper Carburetor 650 CFM 4150 Mechanical Secondaries Billet Color Black Shiny Gasoline

Ultra light Aluminum construction for 43 percent weight savings Ultra shiny Tumble polished finish holds shine longer Ultra strong Billet metering blocks & base plates Ultra cool Black anodized billet aluminum metering blocks and base plate Ultra easy Built in sight window for simple float adjustments Ultra fast High-performance fuel curves Holley Double Pumper carburetors are a perfect performance upgrade for hot street cars and race vehicles. Double Pumper carburetors are an American icon when it comes to performance carburetors.

From their roots as the premier carburetor on many factory muscle cars to powering thousands of vehicles across the finish line, the Double Pumper is a great choice whether you are burning up the street or the quarter mile. The Ultra Double PumperTM Carburetors feature all aluminum construction and are equipped with metering blocks and a base plate made from 6061-T6 billet aluminum.

They weigh in at approximately 5 lbs. less than a comparable zinc carburetor.

The new Ultra Double Pumper Carburetors have an enhanced fuel curve for optimum performance, with many more features such as aluminum construction, anodized billet aluminum metering blocks and base plate, 4 corner idle for precise idle control, dual accelerator pumps for additional fuel under initial acceleration, mechanical secondaries for great performance, clear fuel level sight plugs for easy, no mess fuel level adjustments, Ford automatic transmission kickdown for use on popular Ford transmissions, four vacuum ports for all necessary vacuum accessories, and for the first time on a Double Pumper, factory pre-set electric choke for easy, fast cold start-ups. The clean, polished look coupled with Black metering blocks and throttle body will certainly set your ride apart whether you are at the show or track.

Features and Benefits:

• Shiny with black anodized billet aluminum metering blocks/base plate for good looks and true gasket sealing Ultra Double Pumpers feature an Optimized street/strip calibration that works out-of-the-box Factory preset electric choke for easy startups Mechanical secondaries for awesome tire turning performance 4 corner idle allows you to precisely control your idle system Built in, clear fuel level sight glass for easy, no mess fuel level adjustments Aluminum construction for a 43 percent weight savings Compatible with GM, Chrysler, and Ford A/T kickdown linkage
• Additional parts may be required
• Intended for lightweight vehicles w/ manual trans or automatics with high stall & low gearing 100 percent wet-flow tested by Holley technicians to assure it arrives ready to run!

Associated Comments:

• This model of carburetor has the square bore flange bolt pattern. It can replace Holley, Edelbrock, Carter Afb, and Autolite style carburetors with 5 3/16 inch x 5 5/8 inch 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.

Details:

• Barrel Quantity: 4.0
• Billet Color: Black
• Body Color: Polished
• Body Finish: Polished
• Booster: Straight
• Booster Design: Straight
• CFM: 650.0
• Carburetor Material: Aluminum
• Carburetor Use: Performance and Race
• Choke Type: Electric
• Condition: New
• Cubic Feet Per Minute Rating: 650.0
• Finish: Shiny
• Flange Type: Square/4150
• Fuel Type: Gasoline
• Fuel Inlet: Dual
• Grade Type: Performance
• Linkage Attached: Yes
• Marine Approved: No
• Marine Use: No
• Material: Aluminum
• Model: 4150
• Mounting Hole Quantity: 4.0
• Primary Jet Diameter: 63.0
• Primary Main Jet: 63.0
• Primary Power Valve: 6.5
• Primary Pump Nozzle Size: 28.0
• Secondaries: Mechanical
• Secondary Main Jet: 73.0
• Secondary Pump Nozzle Size: 31.0
• Spacer Included: No
• Supercharged Application: No
• Throttle Bore: 1.688 inch
• Vacuum Ports: 1 timed (spark) port, 2 full, and 1 PCV port
• Warranty: Manufacturer's Limited 90 Day Warranty

Installation Guide: Download PDF

Installation / Product Video: Watch on YouTube

⚠️ California Proposition 65 Warning
California Residents: This product can expose you to chemicals which are known to the State of California to cause cancer or other reproductive harm. Please visit www.p65warnings.ca.gov for more information.