I know it will be a rough database for sure as everyone's setup is different but will give people doing research on what pulley to run on there setup something to coss reference. So I have a 6 rib drive system with stock crank pulley, but the added flow per RPM of the D1SC head unit. Max boost = Max boost under wide open throttle Engine CID Max RPM Max boost Max CFM Required 540 6000 7 1383.929. Does anyone have a chart for boost versus pulley size? For Intercooled ProCharger EFI/TPI applications with compression ratios less than 9.5:1, boost levels of 14-17 psi can be safely run with full timing on pump gas, and will produce horsepower gains of 75-100% (depending upon the boost level and the motor specifications). Enter your Rear Wheel HP and Blower Boost of your car Assuming an engine with a compression ratio of around 9:1 running pump gas,if a supercharger gives your engine 14.7 psi of boost (another atmosphere) that will essentially double the output of your engine, everything else being equal. ProFlow Valve: The ProFlow valve is the standard surge valve option for our street supercharger systems and kits.Compact in size, it can be fitted into tight spots when space is limited. They literally have zero information for me in terms of blower efficiency, boost calculations etc. Well, calling Procharger was useless. I have an oddball setup that most people don't seem to use. Using the Bearing and Impeller Speed Calculator. Wallace Racing BACK to Calculators Todays date is 2/9/2021 These equations are for recreation only. Supercharger Performance Calculator This simulator may be used to evaluate Eaton Supercharger performance based on the specifications you enter below. Input your crankshaft and supercharger pulley diameters and your maximum RPM's into the calculator below. So the lower pulley is anywhere from 6.78" (10% UD from ATI) to 7.48" which is the stock size crank pulley. Equipped with a standard D-1SC supercharger and large, front-mounted air-to-air intercooler, the 6.2L Raptor gets fed 8-9 psi of boost and responds with 600+ horsepower that is ready to shred sand, dirt, grass, gravel, pavement, or pretty much anything else that dares to get in it's way. Also this is an awesome calculator for those of us new to doing all the math, thanks in advance. Any chance to update this calculator to go to 6.70" since a lot of guys are doing LSA blowers on LS3 cars and using the LS3 serpentine system. A stage 1 with a D1SC. Boost Required for "X" Horsepower Calculator Horsepower is related to airflow and airflow is limited by the pumping capacity of a given engine displacement . My kit came with a 4.38" pulley. Procharger Pulley / Boost reference guide Hey guys I think this is a long time coming.. We need to compile this info.. So, has anyone else run an F1R on a built modular and if so, what pulley combo were you running and what boost were you seeing. Not a substitude for actual testing. Given a certain engine displacement and certain other factors you can calculate how much boost will be required to achieve a stated level of horsepower. Compensate for speed-shifting if you drive that way (read the paragraph on speed-shifting below). A simple way to look at our offerings is based on your engine’s horsepower output level: 700 HP or Less. They don't even have a Belt/pulley matrix for this combo.