Eddy heads - will I feel a difference on my 340 ?

I would say no,Im not sure if any of you are quoting numbers or have had edelbrocks flowed but I have seen several flowed and out of the box they were not flowing 250 at there advertised peak.Also they were weak at the .500 lift mark wich is where most guys are needing it any way.From everything Ive personally witnessed on mopar and other makes the out of the box edelbrocks need work to meet what they are advertised as.