Jack,
That information is correct if and only if the tires and all other
componants that relate to relational speed are unchanged from whatever
specs the reference referred to.
I like your GPS solution far better than mileposts on the highway and a
watch. Ever notice how many times a milepost isn't there?
Bob
On Mon, 3 Nov 1997 09:37:06 -0600 "Feldman, Jack"
<jack@ihcmail.ih.lucent.com> writes:
>>From Practical and Technical Tips, Part 1, page 138.
>
>"In direct 4th gear on a standard MGB it should read 2,000 rpm at 30
>mph, or 3000 rpm at 54 mph."
>
>I have used a GPS receiver to check the accuracy of the speedometer on
>the 69 C, and an 86 Olds with over 150,000 miles on it. Much to my
>surprise, both of them were accurate!. Don't forget to drill a hole in
>the back of the case so you can adjust the tach without taking it
>apart
>every time you refine the adjustment. Cover it with a piece of tape
>when
>done.
>
>Jack
>
>
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