10-05-2009, 07:59 AM
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CC Member
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Join Date: Aug 2009
Location: Phoenix,
AZ
Cobra Make, Engine:
Posts: 1,956
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Not Ranked
Quote:
Originally Posted by Bob In Ct
Hey DWRAT:
Both of your numbers cannot be correct. I calculate 2100 RPMs to be 78.75. Regardless, you are running a very tall top gear. My top gear is 2.54 (overall, 3.73 w 0.68 OD) and I turn 1,900 RPMs at 60 MPH.
Bob
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I agree my numbers don't calculate accurately at all but my general rule for speed is:
1900 = 70
2000 = 75
2100 = 80
That is more accurate then my speed which is off by about 8% or so.
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