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RPM's at 60 mph ?

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Old 06-24-2015, 10:19 AM
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blaze 57
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RPM's at 60 mph ?
1993 F-350, 460 with stock e4od auto. Axle code 39, 3.55 gears. What RPM at 60 mph?...thanks!
 
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Old 06-25-2015, 03:36 PM
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Turbo Dog
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I need to know your tire size or outside diameter. You can use this formula and then multiply by your overdrive ratio.


((((RPM*60)/GearRatio)*(TireDia*3.1415927))/12)/5280
 
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