The Holley model 885 was the first of the Holley 'conentric' carburetors. Holley concentric carburetors are sometimes referred to as 'Teapots' because they consist of a throttle body assembly with a float bowl suspended above. There are both 2 and 4 barrel models, and the basic type was used on cars from 1949 to 1956 and on trucks well after that. Governed models were used on IHC trucks into the early 1970's.
The Holley 885-FF and 885-FFC (auto choke) 2-barrel carburetor was used on 1949-1951 Mercury cars with the Mercury engine. The float bowl is concealed within the large airhorn housing.
Holley 885-FFG were governed carburetors used on Autocar, IHC, Flxible, Ford, GMC, IHC, REO and White trucks and buses from 1949 to 1969.