CFM & MPG Carburetor myths.....

True, but the TQ is a totally different animal and cannot be compared to anything with mechanical secondaries, much less a double pumper. Since the TQ is a 100% vacuum secondary carburetor, that means its 850 CFM rating is only at maximum flow. If the engine doesn't need 850 CFM, it won't draw it. A better way to say it is, the TQ will flow "up to" 850 CFM as the engine demands it. If the engine demands less, then that's what it gets. I can tune (and have) an 800 TQ to run on a slant six.......and it ran QUITE good. I know I'm preachin to the choir hear, because you know all this.......but maybe some others do not. While I agree with your basic point, I disagree that the TQ comparison helps prove your CFM myth, because it is a totally different style carburetor than you are comparing it to.


The TQ is a mechanical secondary carb. Just like the AVS. Just like the Holley double pumper. The AVS is technically a VS carb but the 1850 and 3310 are the only real VS carbs out there.