Supercharger, choosing drive ratio? - Ford Truck Enthusiasts Forums

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Supercharger, choosing drive ratio?

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07-22-2009, 12:08 PM

hoxiii

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Supercharger, choosing drive ratio?

How does one go about choosing an initial drive ratio for a supercharger setup?

I have an Eaton M90 that needs to spin at 8500 RPM to meet my required air flow and pressure ratio.

Do I select the drive ratio so that the SC is spinning 8500 RPM at redline, or should it be at 8500 where I want the boost, making sure not to overspeed the SC at redline?

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85 150 4x4 convert, 390 FE, NP435, 205, 9" TTB 44
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chossing , drive , eaton , m90 , radline , ratio , sc , supercharger , truck

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