How do I know where redline is on my fresh engine?

Some engines seem to noticeably nose down when they`re out of their power band. You will want to shift several hundered rpm before you max out your power band. A lot of the power band of your cam will depend on what valve springs you have and whether your engine can rev to 6200 without valve float. With an average build you should make good power through 6K rpm without any issues.