Originally Posted by tashspop
i love the fact that you're using a charger that can be had for so cheap! heck, my dad has on sitting in his garage off my mom's grand prix. it needs a rebuild, or exchange. i believe its the same as the ford, although i'm not possitive. how much boost do those charger put out with factory pullies?
That depends on the crank pulley you are using. The eaton is more of a low pressure pump. I've seen some people running 18 psi but they are really inefficient above 12psi. Yes , they are super cheap. I bid on about 20 of them before I got my 60k mile unit w/shipping for $150
. A rebuild runs about $500. You can also port them to run over 700cfm. I'm running mine stock since our engine displacement is near the smallest reccommended use. M90 is 90 cubic inches of displacement per revolution or 1.5 liters. I posted the equation for getting your pulley ratio on ''calculating supercharger speed'' thread. I've been into turbos for so long a lot of the supercharger stuff is new to me. Its actually easier to setup though. The output is more linear.