Making (sort of) 360 130 tooth flywheel

Good question only because I left out ALOT of info.

The balancing was accomplished with the aid of a CMM machine and SolidWorks and then verified by sending the flywheel with the rotating assembly.

The factory balance is supposed to be something like (I don't have the print in front of me) 140 grams at a 5.1" radius. The balance holes that I reintroduced and indexed, calculated and measured out at 138 grams! on the same 5.1" radius. This was verified by the crank balancer--The flywheel was NOT touched--It was perfect.

So to answer your question "What makes me think, this flywheel is balanced correctly?" Well--The answer is above. I am no 5 minute man---I plan think contemplate. This took some pretty serious resources that most shops don't have access to.

This flywheel was dynamically balanced with the entire rotating assembly AND living happily in a Pro-Stock DIRT car right now. J.Rob