Holley's Double Pumper carburetors are an American icon in performance carburetion, a great choice for hot street cars and race vehicles whether burning up the street or the quarter mile. This 600 CFM model features dual accelerator pumps for additional fuel under initial acceleration, mechanical secondaries, dual feed fuel inlets for constant high-volume fuel delivery, and a manual choke, and is intended for lightweight vehicles with a manual transmission or an automatic with a high-stall converter and low rear gearing.
Specifications:
- CFM: 600
- Model: 4150
- Secondaries: Mechanical
- Choke: Manual
- Finish: Shiny (Polished)
- Material: Aluminum
- Fuel Type: Gasoline
- Fuel Inlet: Dual
- Flange Type: Square/4150
- Throttle Bore: 1.563 inch
- Primary Jet: 66
- Primary Power Valve: 6.5
- Secondary Jet: 73
- Mounting Holes: 4
- Vacuum Ports: 1 timed (spark), 1 full, 1 PCV
- Warranty: Manufacturer's Limited 90 Day Warranty
- Part Number: 0-4776S
This model uses the square bore flange bolt pattern and can replace Holley, Edelbrock, Carter AFB, and Autolite carburetors with a 5-3/16" x 5-5/8" bolt pattern (similar to the Mr. Gasket #1932). A spreadbore-style intake manifold will require an adapter for installation.
FAQ
What CFM rating is this carburetor?
600 CFM.
What type of choke does it use?
A manual, cable-driven choke for hands-on cold-start control.
Can this carburetor replace other brands?
Yes, its square bore flange bolt pattern can replace Holley, Edelbrock, Carter AFB, and Autolite carburetors with a 5-3/16" x 5-5/8" bolt pattern.
Will it work on a spreadbore intake manifold?
Not without an adapter, since this carburetor uses a square bore flange.

