With respect to Paul's question, I don't know what specific amount of balance is acceptable.
If I was buying a "balanced rotating assembly", my expectations are that piston and rod weights are similar, and that the actual out of balance amount is tighter than factory specs. In almost all cases, a rotating assembly is using parts of higher quality for more durability/performance, so overall balance should be better than factory.
After reading posts about balancing, it occurs to me that I actually have no idea what is good or not, so if my assembly was off by 10 grams I really don't know if that is an issue or not.
I had my rotating assembly balanced, but have no idea to what value. Ignorance is bliss!!
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Michael
1970 Oshawa built 1 option Judge. 24 year restoration/upgrade project finally finished!
1979 Trans Am - low-buck drag car project for when I retire
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