I had my buddy set it up before going to the track(He was in a hurry)I believe it was set at 36 and 10 in(15lbs. of vacuum).I was getting a little starter kickback.So after 2 runs(15.30)I just loosened off and moved it back a hair.Next 5 runs were all in the mid to high 14,s.I guess I,ll have to get my timing light and vac. gauge out again.Yes mechanical.
