Well.... My little junkyard 360 has run 7.47 @ 90 MPH in the 1/8th with a perfect air fuel ratio all the way down the track. That would make for a high 11 second 1/4 pass.
Over carbed? Nope. The charts online told me to run 600 CFM. I'm just glad I listened to knowledgable people on here instead of those bullshit charts.
Street only, 600 would be fine. Drag racing, not so much.