Ultra Double Pumper Carburetor 850 CFM 4150 Mechanical Secondaries Hard Core Gray Gasoline Holley

Ultra light Aluminum construction for 43 percent weight savings Ultra stealthy Hard Core GrayTM anodized finish 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 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, 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, stealthy 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:

• Hard Core GrayTM w/ black anodized billet aluminum metering blocks/base plate
• Casting is hard coat anodized for ultimate corrosion resistance 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: Hard Core Gray
• Body Finish: E-Coated
• Booster: Downleg
• Booster Design: Downleg
• CFM: 850.0
• Carburetor Material: Aluminum
• Carburetor Use: Performance and Race
• Choke Type: Electric
• Condition: New
• Cubic Feet Per Minute Rating: 850.0
• Finish: Hard Core Gray
• 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: 80.0
• Primary Main Jet: 80.0
• Primary Power Valve: 6.5
• Primary Pump Nozzle Size: 31.0
• Secondaries: Mechanical
• Secondary Main Jet: 80.0
• Secondary Power Valve: 6.5
• Secondary Pump Nozzle Size: 31.0
• Spacer Included: No
• Supercharged Application: No
• Throttle Bore: 1.750 inch
• Vacuum Ports: 1 timed (spark) port, 2 full, and 1 Pcv port
• Warranty: Manufacturer's Limited 90 Day Warranty