850 cfm proform carb on 318!!!!

Conventional thinking? Equals conserveitive thinking and it's geared towards a street car with or without performance items added on. Nothing to hot as a driver. For best street manors and drivabilty and mileage concerns, the small carb is fine and very workable even if theres an upgrade in the performance add on's.

Doubleing the engines C.I.D. for daily grand-ma street driver to high performance runner is OK and fine.

More built up engines can go beyond this idea and leap up in CFM like ytour about to do.