Description
Part Number: 0-4777S
Holley 4150 Double Pumper 650 CFM Carburetor
The Holley 0-4777S Model 4150 Double Pumper is an iconic 650 CFM four-barrel performance carburetor designed for high-octane street and circuit performance.
Key Features & Performance Highlights
- ☑ 650 CFM Flow Capacity: Optimized street and strip calibration suited for high-rpm V8 engine builds.
- ☑ Mechanical Secondaries: Dual accelerator pumps deliver instant mechanical throttle response and maximum acceleration.
- ☑ Manual Choke Control: Hand-operated cable-driven choke for precise cold start management.
- ☑ Dual Feed Inlets: Ensures reliable high-volume fuel supply under extreme track conditions.
- ☑ Tumble Polished Finish: High-lustre shiny aluminum finish for outstanding engine bay aesthetics.
- ☑ 100% Wet-Flow Tested: Factory bench-tested by Holley technicians to guarantee out-of-the-box performance.
Technical Specifications
| Brand | Holley |
|---|---|
| Manufacturer Part Number | 0-4777S |
| Carburetor Model | 4150 Double Pumper |
| Airflow Rating | 650 CFM |
| Number of Barrels | 4-Barrel |
| Flange Pattern | Square Bore (5-3/16″ x 5-5/8″) |
| Choke Type | Manual Choke |
| Secondary Type | Mechanical |
| Fuel Inlet Type | Dual Feed (9.5″ Center-to-Center) |
| Primary Main Jet | #67 |
| Secondary Main Jet | #73 |
| Primary Power Valve | 6.5 Hg |
| Discharge Nozzle Size | 0.028″ |
| Finish | Tumble Polished Shiny Aluminum |
What’s Included in the Box
- 1 x Holley 0-4777S 650 CFM Double Pumper 4150 Carburetor
- 1 x Base Flange Mounting Gasket
- 1 x Air Cleaner Gasket
- 1 x Linkage & Hardware Fitting Pack
- 1 x Installation Manual & Tuning Guide
Engineered by Holley, a legend in fuel delivery for over a century, the 0-4777S Double Pumper carb delivers uncompromising acceleration and racing pedigree. JP Racing is proud to stock genuine Holley performance parts with expert technical support and fast UK delivery.
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