I tryed a 4:86 gear at the beginning of last year. It was screaming before the 1/8 mile. I do run some 1/4 mile such as Norwalk this weekend. I degreed the cam in and know its in at 106 unless something moved when I slide the gear drive cover on. I can check that. I was going to try timing this weekend and maybe a different carb. Thanks for all the suggestions. Birdtracker