Details
650 CFM Ultra Double Pumper Carburetor
Manual Choke Mechanical Secondaries-4150
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 manual 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
- Manual choke (Cable driven, hand operated) for precise cold start control
- 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!
Installation Note: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" 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.
Specifications:
- Barrels: 4
- Billet Color: Black
- Booster: Straight
- Brand: Holley
- CFM: 650
- Choke: Manual
- Emission Code: 3
- Finish: Hard Core Gray
- Fuel: Gasoline
- Fuel Inlet: Dual
- Material: Aluminum
- Model: 4150
- Primary Main Jet: 63
- Primary Power Valve: 6.5
- Primary Pump Nozzle Size: 28
- Product Type: 4150 Model Carburetor
- Secondaries: Mechanical
- Secondary Main Jet: 73
- Secondary Pump Nozzle Size: 31
- Supercharged Application: No
- Throttle Bore: 1.688 inch
- Vacuum Ports: 1 timed (spark) port, 2 full, and 1 PCV port
- Warning: California Proposition 65
- Warranty: Limited 90 Day