Holley Double Pumper® carburetors stand as the ideal performance enhancement for both hot street cars and competitive race vehicles. A true American icon in the realm of performance carburetors, the Double Pumper boasts a rich heritage—from its origins as the premier carburetor on numerous factory muscle cars to propelling a multitude of vehicles across the finish line. Whether tearing up the street or conquering the quarter mile, the Double Pumper proves to be an exceptional choice.
Designed specifically for lightweight vehicles equipped with a manual transmission or an automatic transmission featuring high stall and low rear-end gears, the Double Pumper is presented in a dazzling gold dichromate or tumble-polished shiny finish. Its features include dual accelerator pumps for increased fuel during initial acceleration, mechanical secondaries for outstanding performance, dual feed fuel inlets ensuring a constant high volume of fuel delivery, and a manual choke for easy control of engine warm-up.
When it comes to performance, trust only the best—Holley, a modular carburetor company with a century-long legacy, having powered every NASCAR champion since the 60s.
Features:
- Gold Dichromate finish for corrosion resistance and classic Holley aesthetics
- Optimized street/strip calibration ready to perform out-of-the-box
- Manual choke (Cable driven, hand-operated) for precise cold start control
- Mechanical secondaries for impressive tire-turning performance
- Dual accelerator pumps for additional fuel during initial acceleration
- Dual feed fuel inlets for constant high volume fuel delivery
- Specifically designed for lightweight vehicles with manual transmissions or automatics with high stall & low gearing
- 100% wet-flow tested by Holley technicians to ensure it arrives ready to run!
Technical Specifications:
- Barrels: 4
- Booster: Straight
- Brand: Holley
- Carburetor Use: Performance and Race
- CFM: 750
- Choke: Manual
- Condition: New
- Emission Code: 3
- Finish: Gold Dichromate
- Fuel: Gasoline
- Fuel Inlet: Dual
- Marine Use: No
- Material: Aluminum
- Model: 4150
- Primary Main Jet: 69
- Primary Power Valve: 6.5
- Primary Pump Nozzle Size: 28
- Secondaries: Mechanical
- Secondary Main Jet: 78
- Secondary Pump Nozzle Size: 31
- Supercharged Application: No
- Throttle Bore: 1.688 inch
- Vacuum Ports: 1 timed (spark) port, 1 full, and 1 PCV port
- Warranty: Limited 90 Day
- Local Pickup Available:
- No
- Local Delivery Available:
- No
- Additional Handling:
- No
