Q-Jet Question

[raceman6135]

The vast majority of Quadrajet carburetors are in the 750 to 850 CFM range, and they came stock on millions of small block Chevrolet engines. GM was able to use these carbs on a variety of engines because they are spreadbore carburetors, which means they have very small primary bores and very large secondary bores. Also, the secondaries open via a vacuum signal, so when set up properly, the secondaries do not open until the engine requires the extra airflow. Therefore, the 750 CFM Quadrajet isn't too large.

It remains to be seen, however, what the OP discovered was the fix to his problem.