I have a 482bb.chevy,DartBigM,Pro1-345 w/871andEnderle bird.This motor ran 7.50 right out of the box, off idle.Blower set at 1to1.It would run 7.50-7.60 all day on this safe fat tune until I got cocky and decided to turn up the wick,got completely lost and ended up in the low 8s.Jim Blake ("Cape Codder") gave me some track side help,and in 2 pill changes got me to 7.75. Pill now 170.Plugs are white and oil is clean.Is this too lean?How much total timing should I use?We built this motor to run 7.50-760 index with out having to kill it,so I/m trying to get the most out of it w/ 1to1 I/m sure there is a lot more in this motor but I/d be real happy to get back to 7.50 consistently! Any sugestions?gddyxp