Apart from sonic testing, magnafluxing & Torque Plate honing, what prep work do you do to make a factory block race ready? I was deburring my 400 block, cleaning up all the casting flash & generally smoothing my block, when a Chevy friend looked at what was doing & said I was wasting my time. Do any of you guys that work on stock block racers do any cleanup of the block? I coated all the inside surfaces with POR15 to make for a smoother surface for oil return, am I going too far?