Holley 650, 700, 750 CFM HP Body Annular Boosters

• Upgrade your 650, 700, or 750 CFM Holley Double Pumper to a race-ready HP main body
• Boosts airflow, torque, and horsepower by removing choke tower restrictions
• Factory-calibrated for immediate performance gains across a wide range of setups

This Holley HP retrofit kit transforms your existing Holley Double Pumper carburettor into a high-performance unit with modern airflow technology. The new aluminium HP main body features annular boosters and eliminates the restrictive choke horn, enabling smoother airflow and improved throttle response. Installation is simple with basic tools, and all required parts are included in the kit. Ideal for racers or street enthusiasts who want to unlock more power without a full carburettor replacement.

Specifications

• Fits Holley Double Pumper models: 0-4777 (650 CFM), 0-4778 (700 CFM), 0-4779 & 0-76751 (750 CFM)
• Main body material: Lightweight aluminium
• Finish: Shiny polished aluminium
• Booster type: Annular
• This HP main bodies come with a baseline air bleed calibration and are set up for 4 corner idle.
• Choke tower and air horn: Removed for maximum airflow
• Application: Suits a wide range of street and race applications

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  #35 Pump nozzles