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1 When we arrived at A&S Motorsports, John had our 289 block fresh from the machining operations. He had the block decked to ensure flatness, line-honed the main bearing journals, and, of course, the cylinders were bored .030 over for a fresh start. Not shown here, John also reconditioned our factory rods, shot-peened them, and installed ARP Wave-Loc rod bolts. After the machining process, John used a combination grinding stone and hand files to deburr the block and take off any sharp edges that might cause stress cracks under heavy load.