Originally posted by Fast truck:
The carb used on most or all stock GMC 302's is a Holley AA1 2 barrel.Very similar to the 94 model used on Ford Flathead V-8's.Does a Stromberg 97 flow less air than the Holley?
The Stromberg 97 is a model of the EE-1 series. It has a 15/16 inch main venturi. Without looking to be absolutely sure, the EE-1 platform would support either 1 1/16 or 1 1/8 venturi. The larger venturi will flow more air.
The Holley AA-1 is similiar. There are a number of different internal venturi sizes. Again, without looking, my guess would be the 302 would use the largest internal venturi available in the AA-1 frame.
Actually, a large Zenith single barrel carb was also used on the 302. The single barrel was a size 3 with a large venturi.
Jon.
