Secondary Booster Reducers

Reduces size of carburetor to the optimum cfm to produce faster acceleration

Some stages of the Negative Supercharging Kit and Impulse Crate Engine require secondary booster reducers to reduce the air flow of the carburetor to the optimum cfm. The booster reducers produce a higher air velocity through the carburetor during full throttle while maintaining the maximum air flow needed by the engine. This produces more torque and faster acceleration from idle. The booster reducers fit over the secondary boosters of 4BBL Carter and Edelbrock carburetors, can not fall into the engine and do not require any modification to the carburetor.

DO NOT use a carburetor that flows 50cfm more than the optimum cfm specified in the Negative Supercharging technical manual because it will reduce the air velocity through the carburetor and produce slower acceleration with Negative Pressure Supercharging.