Gt9 is great for a positive displacement blower. I got it verbatim from LPE not to use that cam with a centrifugal. In a nutshell it has to do with the boost curve of pd vs centri. Much better cam choices out there for a centri.
2014 GMC CC Z71, 2009 C6 vette
2010 Camaro 2ss/rs---SOLD 4/15/14
-654whp with a few cosmetic things, Pfadt suspension, Vortech, CircleD, GPI ss3 vvt bump stick, gears, stuff in between,18" TSW N'rings for drag duty, 20" Forgestar F14s for street.
rhino@ Gwatney Chevrolet/GPI Jacksonville AR
TCAudio in Benton AR