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Old 05-07-2011, 05:13 AM
  #5  
TheRabbit
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RACING JUNKIE
 
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Join Date: Jan 2007
Location: Augusta, Ga.
Posts: 2,276
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All the racing math you'll need.
http://www.wallaceracing.com/Calculators.htm

BTW
Air Capacity & Volumetric Efficiency

Theoretical cfm = rpm x displacement / 3456
Volumetric efficiency = actual cfm / theoretical cfm x 100
Street carb cfm = rpm x displacement / 3456 x 0.85
Racing carb cfm = rpm x displacement / 3456 x 1.1

I made some of my own Excel spread sheets for carb. size and for gear ratios and tire speed with any transmission and transfer case / chain drive.
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