need info on a quadrajet number..

i need a cfm rating on this quadrajet carb #17057204

i need a cfm rating on this quadrajet carb #17057204
looks like a 750cfm..............

looks like a 750cfm..............
and u know this how?????
I found a site that said 750cfm but I want to make sure....

and u know this how?????
I found a site that said 750cfm but I want to make sure....
look here maybe you will find what you are looking for.........
http://motors.search.ebay.com/quadrajet-carburetor

One thing you can do is look down the primary venturies and look at the step in it the 750s had very little sticking out the 600s had alot more sticking out.
They are about half way down a rounded hump that protrudes from the walls.
You can also put a drill to them and get some decent results and improve the responsiveness.I ran one on my jet boat for while