[Gach]

Mike, your asking for trouble!! Big time. Machine measured that block in 5 minutes, and tell how much it needs to be bore. Doubt very much you could hone .010 and still use sane pistons, the can also hot tank that block, or would ever procedure to use to clean. I would never attempt sand blasting a block. Do yourself a big favor and take to a machine shop. The problem is you can read all you want, but sometimes that can get you in big trouble especially if you are inexperienced. Two minutes with a dial bore gage, which will also measure for cylinder wall taper.