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secondchance · 05-05-2009

I came accross an interesting calculator that calculates relative horsepower based on air temp, atmospheric pressue and relative humidity:

http://www.anycalculator.com/enginehorsepower.htm

Based on this 100 degree to 90 degree (10 degree differential) holding air pressure at 31 and relative humidity at 30% for both shows 102.2% and 104% respectively - translating to .18% hp differential per degree.

If this is true, for a motor of 350 hp, per 10 degree drop of intake air should result in 6 hp gain roughly.

05-05-2009	#10
secondchance Join Date: Aug 2006 Location: McLean, VA Posts: 3,739	Re: Blocking off coolant to plenum I came accross an interesting calculator that calculates relative horsepower based on air temp, atmospheric pressue and relative humidity: http://www.anycalculator.com/enginehorsepower.htm Based on this 100 degree to 90 degree (10 degree differential) holding air pressure at 31 and relative humidity at 30% for both shows 102.2% and 104% respectively - translating to .18% hp differential per degree. If this is true, for a motor of 350 hp, per 10 degree drop of intake air should result in 6 hp gain roughly.