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What MPH at 3000 RPM? 140-160 1974

posted by  uniberp on  Fri Sep 5 06:03 CST 2003
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last visit: Mon Jan 31 07:08 CST 2011
[RELATED]

Thanks, George. I found this calculator that will help me get it all sorted out.
I'll have to see what drive gear I currently have, compare my speedo reading to the expected, and calc which drive gear to get.

http://www.kellnet.com/chambers/speedo_gears.htm

Here's what I calculated, which will tide me until I get a new speedo drive,

4th @5800 = 102 *(4.3/4.1) = 107 (my rear end is probably 4.1)
107 *(3000/5800) = 55.3 mph in 4th @ 3000 rpm
55.3/.79 = 70 mph in 5th @ 3000 rpm.
with variance for tires.





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