Holley's Double Pumper® carburetors stand as the ideal performance upgrade for both hot street cars and race vehicles, embodying the essence of American performance carburetors. With a rich history as the premier carburetor on factory muscle cars and a legacy of propelling vehicles across the finish line, the Double Pumper is a top choice for those burning up the street or conquering the quarter mile.
Designed for lightweight vehicles equipped with a manual transmission or an automatic transmission featuring high stall and low rear-end gears, the Supercharger Double Pumper boasts a gleaming tumble-polished finish. It features dual accelerator pumps for additional fuel during initial acceleration, mechanical secondaries for outstanding performance, dual-feed fuel inlets ensuring constant high-volume fuel delivery, and a manual choke for precise control during engine warm-up.
Specifically crafted for use with superchargers, these carburetors have a unique capability allowing their power valves to reference intake manifold vacuum below the supercharger. This ensures the power valve operates based on the correct intake manifold vacuum, providing further enrichment to the main metering system under load conditions. Without this external referencing, the power valve would inaccurately "read" the supercharger vacuum, which doesn't impact engine load.
Features:
- Gleaming tumble-polished shiny finish for an appealing look
- Small block Chevrolet 1x4, 170 series blower calibration
- Manual (Cable-driven, hand-operated) choke for precise cold start control
- Dual accelerator pumps for additional fuel during initial acceleration
- Dual-feed fuel inlets for consistent high-volume fuel delivery
- Mechanical secondaries for optimal off-the-line launches
- 4-corner idle allows precise control of the idle system
- Designed for lightweight vehicles with manual transmissions or automatics featuring high stall and low gearing
- Boost-referenced power valve for proper enrichment during acceleration
- 100% wet-flow tested by Holley technicians to ensure it arrives ready to run!
- Local Pickup Available:
- No
- Local Delivery Available:
- No
- Additional Handling:
- No
