Intake Manifold Port Balance

[FirstEliminator]

    Hey guys,

       How important is it to have the intake manifold flow balanced between all the ports? I've recently read something about balancing the flow of the intake and I can't remember which intake it was that one of the ports was way off. With some intake work, all the ports were pretty close in flow. I believe it was a manifold that Blair Patrick was working with. 
 
   Stock or mild engines seem to just have the intake bolted on in most cases. Does the port balance have much effect on low rpm or part throttle situations? 
   
    Is the Edelbrock Performer RPM close to balanced out of the box?

   thanks,
      Mark

   

   thanks,
      Mark

[427LX]

If you can get all the ports to flow as much as the highest flowing port and the fuel evenly distributed...more HP!
You would need to send it to a good porting shop with ability to flow test it.

[Joe-JDC]

There is quite a difference in flow between the upper plane and lower plane runners on the RPM.  I always try to balance them to within a few cfm of each other when porting them.  I port the intake to 110% of the head flow for the street, and 120% for street/drag race.  Always seems to work on the dyno testing that I have seen afterwards.  Joe-JDC