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One tight spot for some stroker packages is the camshaft. The 383 small-block Chevy, for example, often needs to have the stock rod-bolt head clearanced on two rods to clear a couple of camshaft lobes. Another alternative is to use a small-base-circle camshaft or aftermarket rods with smaller profiles. This is why many aftermarket blocks come with raised camshafts: to create more room for longer strokes.