Thanks for info on the vacuum gauge I'll use that. Not sure on cam or how he set it. He works at our machine shop for napa. his son races at local track and he builds motors for him. I called him the other day and he said just set it at 6 and it will be fine. The cam I bought was a thumper cam that has a slight lope at idle. I'd have to dig through my papers to see the lift and stuff. I take all advice from members. The more the better to figure this stuff out. Thanks again, I'll post other info when I find it.