
850 ULTRA DOUBLE PUMPER - HC GRAY
850 CFM - 4150 - Mechanical Secondaries - Hard Core Gray - Gasoline
Overview
ULTRA light Aluminum construction for 43% weight savings ULTRA stealthy Hard Core Gray™ 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 Pumper™ 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:
- Hard Core Gray™ 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% 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% wet-flow tested by Holley technicians to assure it arrives ready to run!
About Holley

Holley Performance Brands is the undisputed leader in carburetors, fuel pumps, fuel injection, intake manifolds, fuel injection, and fuel systems.
Specs
Barrel Quantity | 4 |
---|---|
Barrels | 4 |
Billet Color | Black |
Body Color | Hard Core Gray |
Body Finish | E-Coated |
Booster | Downleg |
Booster Design | Downleg |
Brand | Holley |
Carburetor Material | Aluminum |
Carburetor Use | Performance and Race |
Category | Carburetors and Components |
CFM | 850 |
Choke | Electric |
Choke Type | Electric |
Condition | New |
Cubic Feet Per Minute Rating | 850 |
Emission Code | 3 |
Finish | Hard Core Gray |
Flange Type | Square/4150 |
Fuel | Gasoline |
Fuel Inlet | Dual |
Grade Type | Performance |
Linkage Attached | Yes |
Marine Approved | No |
Marine Use | No |
Material | Aluminum |
Model | 4150 |
Mounting Hole Quantity | 4 |
Primary Jet Diameter | 80 |
Primary Main Jet | 80 |
Primary Power Valve | 6.5 |
Primary Pump Nozzle Size | 31 |
Product Type | Carburetor |
Secondaries | Mechanical |
Secondary Main Jet | 80 |
Secondary Power Valve | 6.5 |
Secondary Pump Nozzle Size | 31 |
Spacer Included | No |
Supercharged Application | No |
Throttle Bore | 1.750 inch |
Vacuum Ports | 1 timed (spark) port, 2 full, and 1 PCV port |
Warranty | Limited 90 Day |
UPC | 090127718452 |
Part Number | 0-76850HB |
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This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles.
The following vehicles are considered Uncontrolled (Non-Emissions Controlled) Vehicles:
- 1965 and older U.S. manufactured California Certified vehicles
- 1967 and older U.S. manufactured Federally Certified vehicles
- 1967 and older Foreign manufactured vehicle
WARNING: It is against the law to install this part on an Emissions Controlled Vehicle
The following vehicles are considered Emissions Controlled Vehicles:
- 1966 and newer U.S. manufactured California Certified vehicles
- 1968 and newer U.S. manufactured Federally Certified vehicles
- 1968 and newer Foreign manufactured vehicle
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