...also be warned... BEAD BLASTING IS BAD on ANY part that used to, or will eventually contain motor OIL. Glass beads are nearly indestructable, and they stick to oil. All that oil has to do is eventually get pumped through the engine into a bearing surface and you're engine is fawked. Of course, you can hot-tank the part, and then blow it out with compressed air... but that would still scare the hell out of me if I bought HKS cams, forged rods and pistons, and $1500 worth of machine work.
Solution: if you're going to blast something, use walnut shells on any engine parts that will contain oil. Walnut shells are oil soluable, so they won't eat bearings if you don't manage to clean that one little tiny piece of it out of the part.