Holley Street Avenger Carburetor - 4-Barrel - 870 CFM - Square Bore - Electric Choke - Vacuum Secondary - Dual Inlet - Chromate SHR20MCS3 1959-1996 Chevrolet Impala

1959-1996 Chevrolet Impala

1964-1967 Chevrolet Malibu CID 376 CC 6162 6

a new dual-density air integration relief system

Good torque and very strong mid-range power

Holley Street Avenger Carburetor - 4-Barrel - 870 CFM - Square Bore - Electric Choke - Vacuum Secondary - Dual Inlet - Chromate SHR20MCS3 1959-1996 Chevrolet ImpalaThis model of carburetor has the square bore flange bolt pattern. It can replace Holley, Edelbrock, Carter AFB, and Autolite style carburetors with 5 3 16" x 5 5 8" bolt pattern. If you have a spreadbore style intake manifold, you will need an adapter to install this carburetor. Similar to the Mr. Gasket #1932. Optimized street calibration that works out of the box Factory preset electric choke for easy startups or manual choke for precise cold start