Okay, time for Dad to speak up. My sons horse power wishes are a little zealous. If he could make 500 rwh i'd help dasfinc eat his shoe. He might and i mean might reach 450 at the flywheel, but thats pushing it. As far as the blower goes it was sent to embre Machine an ported and polished before we aquired it.
It was set up to put out around 16-19 lbs boost. The bearings have been upgraded to handle 19,000 rpm, which i would never attemp. i've set it up so it will spin max 14,000 at 6500 rpm max The company in forest grove Oregon that specializes in eaton blowers is Magnum Powers, they make some realy nice stuff. I've spoke to the owner a couple of times about setting this up. I recomend anyone with a eaton check out his site
http://www.magnumpowers.com/. The tuner is going to be Adam Marrer of Pops racing via remote desktop. if i can figure out this picture posting thing i'll put some pics on. And i am old.
It looks like it is coming together nicely, and I like what you have done, but it sounds like you don't understand CFM/Supercharger efficiency either.
My setup has a 2.0 pulley on a Magnuson MP90 Charger, and puts out 8PSI.
Stock internals on a 5.0 cannot take much more than 8.0PSI safely or reliably. If that blower makes 19PSI, his power goals would be achievable, but the block would still crack in half long before then.
My 2.3 pulley made 5PSI.
I know you are using an over-sized crank pulley to my understanding to get it to spin faster, but again:
A) Stock 5.0 internals do not like more than 8PSI
B) I've never seen an M90 blower make close to 19PSI on a V-8, it just doesn't move enough air. Does't matter how much the blower is modified. Infact, I don't think I've seen any Eaton M112's make over 18PSI on Cobras...
Stock 2003-2004 Cobra's only push 8-10PSI with the M112.
A STOCK M112 blower spinning at 19,000 RPM at 6500RPM and makes right about 15PSI on the 4.6 Cobra V-8. an M90 spinning at 14,000 will not even make remotely close to that. I'm sorry to be so firm on this, but an M90 just doesn't have this kind of efficiency.
I will eat my UNDERWEAR if it makes more than 15PSI of boost and doesn't instantly explode.