Rochester 2BBL 2G 500CFM Stage 1

Description

Features

• 500CFM@1.5″ test depression
• 1-3/8″ venturi
• 1-11/16″ Throttle Bore
• All choke hardware removed and openings plugged
• All vacuum ports plugged
• Booster venturi modified for increased airflow as well as better signal strength and atomization
• High flow .130″ needle and seat for consistent float bowl fuel volume
• Idle, transition, main, and high speed circuits modified to provided optimum fuel curve for YOUR engine
• Jet threads re-tapped for HOLLEY jets
• Power piston system for low vacuum racing cams
• Small area brass float to maximize float bowl capacity
• Idle air bypass holes drilled in throttle plates for clean idle and crisp off idle response on restarts