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Supercharged 7.3
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[QUOTE="Charles, post: 1014993, member: 103"] I started thinking about this again... If an M112 is a 112CI/rev unit, then it would have to spin over 12,000rpm just to keep from forming a vacuum ahead of a [i]stock[/i] charger at full song. Over 14,000rpm to stay [i]even[/i] with a 38R at full song. That's not to make decent boost, but just to keep from choking the turbo. Also, on some quick research, it appears flex has to do with rpm and rotor length. So in fact, a smaller unit (with shorter rotors) would be stronger second stage. And second stage it only has to stay above ~300 or so CFM (the engine displacement), not the 7 to 900+ of even a small 7.3 charger. The engine the blower came off of (5.4???) would only move 475cfm at 5000rpm even if it acheived 100% VE! And a [i]stock[/i] 7.3 turbo moves another 300 or so CFM! Point being, I would not under-estimate the possibility of the blower turning into a coffee stirring straw ahead of even a stock charger. A 122CI blower isn't in the realm of a turbo. [/QUOTE]
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