600 CFM 4 Barrel Vacuum Secondary Carburetor w/ Manual Choke No Gaskets

Speedmaster 600cfm 4-barrel carburetors are designed for a variety of configurations for street, strip, and track performance. Developed on dyno runs, racers and street heroes alike, Speedmaster has taken their carburetors to the next level and set a standard for performance and reliability that's hard to beat

This is a vacuum secondary version: Vacuum secondaries are activated by venturii velocity thought the primary venturii and further aided by secondary venturii velocity. Engine/manifold vacuum is not related and has no effect on the operation of the carburetors secondary system.

Features:

Cast aluminum metering blocks with changeable emulsion bleeds & idle feed restrictors.
Power Valve Restrictors allow for infinite tuning and tailoring to any Engine.
Large glass sight windows for quick fuel level adjustments.
Cast Aluminum base plate for strength and durability.
Adjustable accelerator pump.
Stainless Steel throttle plates.
Changeable Emulsion Jets.
Calibrated for gasoline.
Idle Feed Restrictors.
Screw in air bleeds.
Dual fuel inlets.
2 corner idle.