Proform Race Series Carburetor - 750 CFM - Mechanical Secondary 42085S Allows you to change the

Allows you to change the amount of ignition vacuum advance for maximum part-throttle performance while preventing the harmful effects of spark knock (detonation)

5/16-18 in Adapter

is complemented with a Harness Kit to match your application

1973-1986 Chevrolet Caprice

Proform Race Series Carburetor - 750 CFM - Mechanical Secondary 42085S Allows you to change theFinally an affordable high performance race carburetor! PROFORM's new Race Series Carburetor is hand assembled in the U. S. utilizing the PROFORM High Flow Carburetor Main Body, durable billet metering blocks, and a high performance billet throttle base plate. The PROFORM Race Series Carb includes: PROFORM Carburetor Main Body: High Flow Main Body! Dyno Proven Horsepower & Torque Gain! Adjustable, Screw In Air Bleeds! High Performance Down Leg