Edelbrock Carburetors?

Yes some Eddy/Carter carbs have slightly smaller primary bores, but not enough to qualify them as spread-bore. ThermoQuad and QuadraJets are examples of spreadbore carbs (see below). Spread-bores also use the narrower flange bolt pattern....

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i never implied it was a spread bore just stated it wasnt exactly a square bore, its not exactly a four barrel either ....

People get "square bore" and "square flange" confused. I will just stop right there.

i do confuse easily