How do you measure blower boost?

1,000/546 = 1.83*14.7 = 26.9 – 14.7 = 12.2psi is the approximate max boost at 6,000rpm with 1,000cfm. You select pulley sizes to spin the blower to close to max impeller speed at the rpm where you want the power peak (primarily determined by the cam). Anything which increases VE will increase power but decrease boost.Click to see full answer. Thereof, how do you calculate boost?1,000/546 = 1.83*14.7 = 26.9 – 14.7 = 12.2psi is the approximate max boost at 6,000rpm with 1,000cfm. You select pulley sizes to spin the blower to close to max impeller speed at the rpm where you want the power peak (primarily determined by the cam). Anything which increases VE will increase power but decrease boost.Beside above, how much horsepower will a blower add? Usually with a mild blower cam and a larger carburetor you can expect a typical small block to produce anywhere from 360 to 400 streetable horsepower. The addition of a set of good heads can boost this into the 440 to 470 hp range. Torque on an engine of this type typically will be in the 400 to 440 Ib. -ft. Secondly, how do you calculate psi for boost? Divide your required airflow by your engine’s stock airflow to determine the required boost pressure ratio (the ratio of boost pressure to atmospheric pressure, which is about 14.7 psi). For the example engine, you arrive at a pressure ratio of exactly 3.00.How do I get more boost from my supercharger?The simplest way is to increase the speed at which the supercharger spins in relation to engine RPM. To do this either you swap out the lower “crank” pulley for a larger one, or swap out the upper pulley on the supercharger itself with a smaller one.