The Stromberg 4A Aeroquad was produced from 1952-1954 and was Stromberg's only four barrel carburetor. It was used exclusively on Buick V-8 engines. The 4A was probably the first four barrel automotive carburetor, appearing shortly before the Carter WCFB.
For a while in the 1950's it was a favorite of hot rodders. A pair of these were used on the car in the 1957 movie Dragstrip Girl.
This appears to be two Stromberg 4A carburetors on a nailhead Buick with Offy valve covers.
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