Another thing to add about stock type stamped steel rocker arms is that the ratio will be all different.
One might be 1.69,another 1.63,& 1.70 & so-on.
They are not exact ratios.
Non roller tip rockers will wear the guides out faster than roller tip.
And our 194-292 cylinder head guides are short & tend to wear out faster than a longer guide would.
MBHD
