Has anyone done a "before and after" 1.5 vs 1.6 rockers? I know you gain about .030 lift, and it will make the ramp "faster". I was wondering if anyone has done ONLY this change and seen E.T. results?
Sometimes adding more ratio helps, sometimes it doesn't. It usually doesn't hurt. More ratio only adds power if the engine needs the valves to open quicker and further. Some engines don't need the intake valve to open faster, some do. There is no absolute answer, it just depends on what the engine needs.