Hi Bill,
Although the revs are high, I guess I can live with them until I get an
overdrive! Thanks to everyone who sent me numbers, on and off list!
Tom
Message text written by "Bill Blue"
>
I have been doing some calculation of engine speed for different ratios.
If
you have a 4.22 and are running 195-70 13 tires (the closest modern size
O.D. to the "original" radials) you should be turning 3890 RPM at 65. With
a 3.89, you are running "only" 3585 RPM. By the way, we drove faster than
65 back then for long stretches at a time. (Even though the interstate
system was fragmentary, Indiana's state highways had a speed limit of 65,
so
we normally drove about 70 or so). The only difference between then and
now: it was rare for anything but the little sporty cars to have tachs, so
we had nothing to relate 3900 RPM's to. We just knew we were buzzing down
the highway.<
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