About Labwork： Labwork is an Auto Parts One-Stop Solution brand of more than 10 years, which specializes in providing global customers with top-notched quality automotive parts & accessories . If you need any auto parts, its enough to come to Labwork. Features： Auxiliary Venturi:7mm Venturi(Choke tube):31.7mm Main jet:190 Air correction jets:190 Idle jet:120 Needle valve:3.3 Replaces Part Numbers: Directly replacement 4-BBL carburetor Replace For 1901-GG Rochester Quadrajet Carburetor- 4MV - 1966-1973, 1975-1979 Corvettes,1968-1973 For Chevy/GMC Trucks Part Number 1901R. .
