As far as numbers go, anything under 3 grams for a street car is more than plenty good. Trying to get any more out of it is just screwing the customer or myself.
Crank balancing is a time intensive thing. A factory balance can be 20 or more grams out and not shake. Like I said, when you get to doing undrilled balance jobs it gets expensive. Damn quick. I would never consider that for a street engine.
So, there is a difference between a street balance and a race balance. Each has its own place.
