[burntnova]

This un related to my nova build but I race Dirt track midgets that I run a 2.4L ecotec motor in and I'm building a new motor for the upcoming season and I have a few questions.

Does it make a difference if I get the rotating assembly balanced?

What benefit do I get by using a stronger valve spring on a stock long block and head?

If anyone has knowledge to school me on this I'd appreciate the help.