Ken Troutman hones the bores to the final size in three stages. Each stage uses a different type of honing stone so that we wind up with the best bore finish and proper crosshatch pattern for good oil control. We can’t tell you which stones should be used because the best options vary depending on many factors including the type of block material, piston and ring choice, and even the honing machine being used. Notice also that the block is getting honed with a torque plate bolted on top of the block. The torque plate mimics the stress a block will see when a set of heads is bolted in place. This helps ensure better bores when the engine is complete. It’s usually a few extra bucks to get the block honed with torque plates in place, but we consider it money well spent.