balance ?

You'll also be turning down the counter weights or machining the piston skirts. The 318 piston won't clear the counter weights of the crank. Do they make a piston for this application?

The way I read it is, you buy Silvolite .030 318 pistons with 1.741 compression height, and mill .065 off the tops. Then you mill the skirts to clear the counterweights. Makes a 347 CI motor. I would have to look up the price of a 3.58 stroke crank with 318 size mains to believe it would be cheaper than turning the 360 crank mains. If it is cheaper that way, the price of turning a crank must have skyrocketed in the last few years. :eek: