?'s about tuning, pinging, and Compression

Well that I think I will set the timing back to where it first was and tweak the carb a little bit than run it like that till I feel comfortable enough to take the motor to the track.

Speaking of cams how is redline figured? Right now I haven't rev the engine past 3,000rpm but I can tell there is going to be a big difference. The high end of the cams rpm range is 6500rpm does this become the new redline or is this where I want to rev it up to before I shift when racing?