Originally Posted by topside
^^^ Yup.
It's something of a generalization, but for street use, a smaller carb will work better than a big carb, especially on a small engine like a 318.
Velocity vs volume, and better vacuum signal as a result.
Airflow of the heads also figures in.
Note that the 6-bbl/Six-Pack cars generally ran with the small center carb for most street duty.
Agree with the T-quad, kinda best of both worlds on the street, been there.
2nd best I think would be an Eddy AVS2, I really like mine.
For most 318s, 600-650 CFM is fine.


I like the TQ but it wont work with the available intakes for the magnum. I will be using an AVS-2 which is a nice carb I have one on a 360 in my 77. I was just trying to understand the reasoning behind the 800 cfm being used on a stock magnum. I've had a 383 with dual 750s on an M1 tunnel ram, but it wasn't a stock 383. So I was just looking for the reasoning. I thought possibly it was due to the better flow, the magnum breathes better. I'm not trying to argue for a bigger, or smaller.


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