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Message: <blockquote data-quote="Tazza" data-source="post: 23497" data-attributes="member: 82">You can deck the block to get rid of the score. An engine re-building shop will need to do it though. When they deck the block, they will also need to take a bit of metal off all the pistons. With the head and gasket on, there should be a set distance from the top of the piston to the underside of the head, called piston to head height. Any (good) engine re-builder will know what to do here. They simply put the pistons in a lathe and take a skim off them to get the height rite.Your mechanic said it can't be done because he doesn't want to do it!</blockquote>