Description
Holley 650 CFM Ultra Double Pumper Carburetor – Blue Billet
Ultra-lightweight 4-barrel performance carburetor with 6061-T6 blue anodized billet metering blocks, mechanical secondaries, and electric choke.
Product Overview
The Holley 650 CFM Ultra Double Pumper® Carburetor (0-76650BL) delivers iconic performance engineered with modern lightweight materials. Built from all-aluminum construction, the Ultra Double Pumper is roughly 5 lbs lighter (a 43% weight reduction) than traditional zinc carburetors while maintaining optimum thermal characteristics and long-lasting shine. Featuring 6061-T6 blue anodized billet aluminum metering blocks and base plate, this Model 4150 carb provides exceptional gasket sealing and precise fuel delivery.
Equipped with mechanical secondaries for instant throttle response and an electric choke for fast cold start-ups, the 0-76650BL is optimized out of the box for street and track performance. Clear sight glass windows allow for hassle-free fuel level checks without spillages, while four-corner idle adjustment gives you ultimate tuning control.
Key Features
- ☑ Ultra-Light Aluminum Construction: Delivers a 43% weight reduction over traditional zinc carburetors.
- ☑ Blue Anodized Billet Components: 6061-T6 billet aluminum metering blocks and base plate ensure true gasket sealing and striking under-bonnet aesthetics.
- ☑ Mechanical Secondaries & Dual Accelerator Pumps: Provides immediate throttle response and maximum fuel delivery under acceleration.
- ☑ Factory Pre-Set Electric Choke: Ensures reliable, hassle-free cold engine starts.
- ☑ 4-Corner Idle Tuning: Allows fine-tuning of the idle circuit for smooth operation and modified camshaft profiles.
- ☑ Built-In Glass Sight Plugs: Enables clean, accurate float level adjustments without fuel spills.
Technical Specifications
| Brand | Holley |
|---|---|
| Part Number | 0-76650BL |
| CFM Rating | 650 CFM |
| Model / Flange | Model 4150 / 4-Barrel Square Bore |
| Material / Finish | Tumble Polished Aluminum / Blue Anodized Billet Blocks |
| Choke Type | Electric Choke |
| Secondary Type | Mechanical Secondary |
| Fuel Feed | Dual Inlet |
| Primary / Secondary Jets | Primary 63 / Secondary 73 |
| Power Valve | 6.5 Primary Power Valve |
What’s Included in the Box
- 1x Holley 650 CFM Ultra Double Pumper Carburetor (0-76650BL)
- 1x Carburetor Base Flange Gasket
- 1x Air Cleaner Gasket
- 1x Mounting Hardware Pack & Vacuum Fittings
When upgrading your high-performance V8 engine, trust Holley for proven track records and unmatched quality. Available at JP Racing with fast UK shipping and technical support from our experienced motorsport specialists.
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