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71Scamper said
Sorry to burst your bubble but most Q-jets are actually around 725 cfm respectfully. There is a few models floating around that can produce around 775cfm. I only know this because when I was in school (UNOH) I did some flow tests on a few different Q-jets to prove other students wrong using a Superflow tester. needless to say they all started to dig out those Q-jets they tossed on the workbench to replace with a holley or edelbrock.
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You are correct that most only flowed 725. If I remember right there was 3 sizes of of Q-jets and the smaller one was only 650 cfm. The next one up was the 725 and a few rare ones used only on Pontiac RA or HO cars, Buick stage 1's, and Olds 442's were rated at 800 cfm. I never actually flowed them like you. Just what I gathered by reading a lot of info on them.