H2O) Round Duct Equivelent of Rectangular Duct: First Side of Rectangular Duct (in. The 310 horsepower rating of a 1973 Pontiac Trans Am SD 455 may seem quite dismal if you're comparing it to something like the 370 horsepower rating of the 1970 Pontiac Trans Am RAIV 400, but the actual difference in the power output of these two engines is much smaller than the 60 horsepower discrepancy indicates. First unit: atmosphere cubic foot per minute (atm cfm) is used for measuring power. Watt would call this new unit of measurement "horsepower". You cannot make more horsepower that your turbocharger can supply...For instance if your turbo peaks at 360 horsepower (about 44 pounds per minute) it simply is not going to make any more horsepower no matter what the calculator …       For late-model multiport fuel injection type engines (Chevy LS, Mopar Gen 3 Hemi, etc.) CONVERT :   between other power measuring units - complete list. Back to Calculators Horsepower is a measure of the ability to move a certain amount of weight a certain distance, within a certain amount of time. This calculator uses the formula: Air flow (CFM) = (Horsepower × 0. In choosing a particular turbo you need to know how many Pounds Per Minute or CFM the turbo compressor map indicates for a particular pressure ratio (boost pressure). To the best of our knowledge it provides a good quality of accuracy but we do advise that you should always double check your results to avoid any problems. US Customary Metric. This is a great tool for estimating carburetor or throttle body sizing to avoid going either too small or too big (which is a common mistake). If you know how much horsepower your motor makes, you can estimate its air flow in cubic feet per minute (CFM). The following is a generic equation to determine the required horsepower to drive the fan or blower element . One horsepower is equivalent to the amount of force needed to lift 550 lbs of weight within a period of 1 second. This calculator is based on Naturally Aspirated applications. P = (Q x PF)/(33,000 x ) or. Alternatively you can enter the total number of technicians active for estimation. Calculate … Net horsepower was attained from engine dynos with the accessories, OE air cleaner, and factory exhaust system present on the test subject engine. and How many horsepower - Metric are in 1 atmosphere cubic foot per minute? KylesConverter.com is not responsible for any inaccurate data provided. We always welcome any advice/experience that people can give us to help us improve on these utilities so please contact either Mike or myself using the links below if you have any contributions. (Not your typical STATIC compression number, if you don't know this you can calculate it. To make horsepower numbers more accurate to what you would actually see from your engine when installed in your car, for the 1972 model year, American car manufacturers started using "net" horsepower figures. Please note, the Horsepower figure is a rule of thumb approximation, unlike the Flow Rate figure. This equation does not compensate for temperature, density or airflow charateristics of any particular fan or blower. These gross horsepower figures came from engine dyno results in which the tested engine had no real-world accessories attached such as power steering pumps, smog pumps, and or A/C compressors. 2. for conversion factors between unit pairs. Torque - HP. Converting atmosphere cubic foot per minute to horsepower - Metric value in the power units scale. Second: horsepower - Metric (hp) is unit of power.