At highway cruising at 60mph as you describe, the 1950rpms will save fuel, if your vehicle is like mine. My car showed about 2400rpms in stock form. I can put it in 4th gear now to get the same crusing ratio as I had in fifth before the swap. The benefit is about 4mpg.
james
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See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.
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