Well for you and your car it sounds fine. 9.5" of vacuum wow, good thing you don't have power brakes. Yeah I know the sound you are talking about, theres some guy down my street that has a 68 camaro that you can hear before you can see it. Thats not for me well maybe but I drive my car almost everday the roads are clean. I am up in Michigan and I still have it out, I don't care how cold it gets so long as theres no salt on the roads its going out and I don't need-make that want- anybody to hear me coming. Oh its a 318, with 3.91 gears-I am staying with that soild cam come this spring. I need more vacuum than 10" so thanks. I also use K & N filters which cost $10 and Valvoline VR 1 racing 20w-50 oil which at auto zone is $2.99 a quart so thats $25 a oil change. I think this is a great thread, I look at the whole thing tonight once agian. I am sure this will help many folks out. I notice you were at first going with the 284 cam so we did talk you in to going down 1 size so maybe we did get though to you, ha ha. The main thing is that YOU are happy, thats what counts.