Miracle
Your exactly right about ramping. The roller follows the steep lobes without extra wear, where the tangent point on a flat lifter/cam can get damn near the OD of the lifter. For longevity, the roller is great when you talk about steep cams. With an engine being wound up real tight though, I've found that steep cams get limited by the resulting speed of the valve. Thats where the Ti valves and tit springs come in.
Great point though.
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