Superior, Even Fuel Distribution Designed with Simple Carburetor Tuning & Maintenance in Mind

For 1986-Earlier SB-Chevy, this system has interchangeable venturi sleeves, airflow ratings from approximately 500 to 1000+ cfm, and all-new Demon in-line 4-bbl carburetor with Triple-D AeroRam intake manifold. This allows larger camshafts to operate at low engine speeds with low vacuum and improves low-speed idle, part-throttle drivability, and fuel consumption. There are two idle mixture screws, one idle speed screw, and NO gaskets to leak under float level.