When to re-balance a motor?

69_340_GTS said

So... everybody is turning their engines a lot faster than a couple decades ago? I really doubt that is true, in general. Especially on the "street".

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I would tend to agree... On the dirt tracks 7500 was almost unheard of before the 80's... Now many classes have an 8500 chip rule.

I have a friend who really leans on his sbc to the tune of 8800 in 25 lap features... not uncommon.

Now my plan is 7200 this season but it used to be 6500.


I'm skeered...