Reply to "Edelbrock Intake. Modify or not Modify?"

I've used the older Edelbrock F351-4v, which i think is the predecessor of the Perfomer, it had 2v size ports as well.

I used it as is, i did not port it, Edelbrock's instructions stated it should be used as is and the port mismatch was a very deliberate feature that resulted from their extensive dyno testing.

I imagine the same is true for the Perfomer.

The F351-4v i used as is was brutal, it had good throttle response low down and was terrifying when you got the revs up.

Don't port the Performer unless you are experienced at manifold modification and know EXACTLY what you are doing, otherwise you could stuff up a otherwise very good manifold.