Yea I thought it might be to much. I had my fingers crossed when I fired it up. I then drove it awhile checked for any smoke (black smoke of course)and checked my plugs. They looked great. What funny. With my 390 my plugs were always had a lot of carbon. Even when tuned well. And now very minimal carbon. Oh and my edelbrock is straight out of the box no mods. I don't know how much hotter the AC R45's are then the Autolite 303's But that could have made a difference too.
