Ideal shift point article

I get what you are saying about the 4.56s. With 28s, the rpm at 30mph is 3152 in second(1.92). That is a really nice jumping off rpm. 60mph will thus be 6304, top of second.
With 3.55s and a GVOD that same jumping off rpm is 3080 in 1st-over (3.09x.78=2.41),and 60mph will be 6160,still in 1st-over.
Of course with 3.23s that same jumping off point is now 3093 in first gear (2.66), and 60mph will be 6186, at the top of first.