Genuine Holley Street HP 650 Double Pumper

Genuine Holley Street HP 650 Double Pumper

Genuine Holley Street HP 650 Double Pumper blends race-bred performance with street-friendly tuning. These aluminum Street HP carbs weigh up to 40% less than traditional designs, delivering impressive power without breaking the bank. Built to take cues from Holley’s 4150 HP lineup, the Street HP is tamed for street and light competition use, providing race-winning tech in a more practical, streetable package.

Key Features

• Aluminum construction for significant weight savings and durable good looks
• Contoured venturi inlet for balanced airflow and increased horsepower
• Screw-in air bleeds for precise tuning control
• 100% wet-flow tested by Holley technicians to ensure ready-to-run performance
• Dual accelerator pumps for additional fuel under initial acceleration
• Dual feed fuel inlets for constant high-volume fuel delivery
• Four corner idle for precise idle control
• Mechanical secondaries for strong tire-turning performance
• Timed spark port included for a vacuum advance distributor
• Base plate designed for the 650/750 CFM models with ample vacuum ports for power brakes, PCV, and more
• Available in 650, 750, 850, and 950 CFM versions

Performance and Tuning

The Street HP 650 Double Pumper is calibrated for hot street and light-strip engines, delivering outstanding throttle response, drivability, and maximum performance. The aluminum contoured main body, taken from the race-winning 4150 HP design, features a tumble-polished finish and screw-in air bleeds that allow you to dial in precise fuel and air delivery. With dual accelerator pumps and mechanical secondaries, you’ll experience strong initial acceleration and predictable power through the twisty parts of the track or the street.

Compatibility and Application

Designed for lightweight vehicles with either manual transmissions or automatics with high stall and low gearing, the Street HP base plate on the 650 and 750 CFM models provides multiple vacuum ports for power brakes and PCV systems. The carburetor is compatible with GM, Chrysler, and Ford A/T kickdown linkage (additional parts may be required), making it a versatile upgrade for a wide range of builds.

Why Choose Street HP 650 Double Pumper

• Race-worthy features combined with street-friendly calibration for everyday performance
• Aluminum construction delivers weight savings without sacrificing durability
• Precise tuning capabilities with screw-in air bleeds and a timed spark port
• Strong initial response and reliable fuel delivery thanks to dual pumps and dual inlets