Just curious but what is the biggest bore you can do on a Chevy 350 with out changing a lot of things?
http://www.competitionproducts.com/Chev-350-Rotating-Assembly-4040-Bore/productinfo/350SP-30/Ok, I'm looking for a complete engine rebuild kit for my Chevy 350. Where can I get a complete kit for a good price online?
Had that same idea.Balancing is when they balance the rotating assembly. Pistons, rods, crank etc. It makes sure that as all of those parts rotate around a centerpoint (center of crank) that is is balanced in all 360 degrees.
It provides for a smoother running motor, longer lasting motor due to less force being applied to certain parts.
Think about what happens in your washing machine when you put all the wet clothes on one side during the spin cycle.
Usually you are better off geting a rotating assembly balanced but it will depend hom much benefit by what your intended usage is.
Why dont you post up what you are starting with, what you want to do with the motor as the end result as well as your budget. You will get a lot of help.