Provided your tires are close, and or your not already gear bound when you make the change .Every tooth is 100 rpm.
If you aren't accelerating enough to keep up on restarts and are getting beat out of the corner I would check you're clutch. Specifically at what RPM it's set to engage. I run bully clutches on my kids karts and the setup info from bully specifies, "The actual engagement should be at or up to 200 RPM’s above the peak torque of the engine." with recommended starting engagement RPMS for each class and instructions on how to tweak it. A 14 tooth drive should be helping you off the corner. So I would definitely check the clutch engagement.So first time ever racing Saturday did not go as planned but had so much fun. A question I have seems like I was getting out powered at start and coming out of turns I was under power I was turning a 6.667 rpm what is ball park per tooth moving up or down rpm difference