[rblong]

I thought about that also, but did not know there were split intake manifolds. I have a Edelbrock Performer 390 and Speed Demon 750 carb. I suspected I needed to tweak the mixture but wanted to wait till I had my new side pipes on. I will followup after I investigate the split manifold. I appreaciate your help. I see you respond to a lot of peoples engine questions and it is very helpful. May seem basic to you (and probably a lot others) but is reassurance to us not so experienced rodders.

Thanks,
Bruce