Holley 850 Cfm Manual Choke Double Pumper 4150 Carburetor - Silver

Holley's Double Pumper® carburetors stand out as the ultimate performance upgrade for hot street cars and race vehicles. These carburetors have become an enduring American icon in the realm of performance, with a rich history that includes being the premier carburetor on numerous factory muscle cars and propelling thousands of vehicles across the finish line. Whether tearing up the street or conquering the quarter mile, the Double Pumper is a great choice.

Designed for use on lightweight vehicles equipped with a manual transmission or an automatic transmission featuring a high stall and low rear-end gears, the Double Pumper is available in a gold dichromate or a tumble polished shiny finish. It boasts dual accelerator pumps for increased fuel during initial acceleration, mechanical secondaries for great performance, dual feed fuel inlets ensuring a constant high volume of fuel delivery, a manual choke for easy control of engine warm-up, and a 4-corner idle for precise control of the idle system.

When it comes to performance, don't trust just anyone. Holley stands as the only modular carburetor company with over 100 years in the business, having powered every NASCAR champion since the 60s.

Features:

• Shiny finish for good looks
• 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
• Dual accelerator pumps for additional fuel during initial acceleration
• Dual feed fuel inlets for constant high volume fuel delivery
• Intended for lightweight vehicles with manual transmissions or automatics with high stall & low gearing
• 100% wet-flow tested by Holley technicians to assure it arrives ready to run!

Technical Specifications:

• Barrels: 4
• Booster: Down Leg
• Brand: Holley
• Carburetor Use: Performance and Race
• CFM: 850
• Choke: Manual
• Condition: New
• Emission Code: 3
• Finish: Shiny
• Fuel: Gasoline
• Fuel Inlet: Dual
• Marine Use: No
• Material: Aluminum
• Model: 4150
• Primary Main Jet: 80
• Primary Power Valve: 6.5
• Primary Pump Nozzle Size: 31
• Secondaries: Mechanical
• Secondary Main Jet: 80
• Secondary Power Valve: 6.5
• Secondary Pump Nozzle Size: 31
• Supercharged Application: No
• Throttle Bore: 1.750 inch
• Vacuum Ports: 1 timed (spark) port, 1 full, and 1 PCV port
• Warranty: Limited 90 Day