I took this off the BDS site:

http://blowerdriveservice.com/faq.php

It says :" To measure CFM on a blown engine:
{(CID x RPM) ÷ 3456} x {Boost ÷ 14.7) + 1} = CFM required.

So on a 292 I6 spinning 6000RPM w/ 10#'s it'd be:
(292x 6000)÷ 3456x (10÷ 14.7)+ 1= 851CFM Right?


I also found this to find the final compression ratio:

Final Compression Ratio (FCR) = [ (Boost÷14.7) + 1 ] x CR

That would mean I'm running around 14:1 compression with 8.5:1 base and 10 lbs boost...
Maybe I'd better go with 8:1 to bring it down to around 13:1...