I just ran some calculations with this tool. I appear to only need 10.71 to sustain 60mph in my current configuration, give or take depending on my assumptions for the calculator. That is not a lot of horsepower!
Yesterday I had to commute 150 miles for work & got a 64.4 mpg average WITHOUT nearly as much EOC as I used to do (which was all the time). My new taller tires and the repaired head gasket have produced better numbers, I think.
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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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