Well Comp Cams offers a street/strip cam that changes the lobe/lift value by .060" which is significantly noticed during 4,800rpm increase. Since our valvetrain is focused on exhaust cam for VVT closing early to increase reduction on emissions, I would suggest going with their intake camshaft and requesting a .055" cam lobe/lift cam made by ZZP to accommodate valve overlap process. You will not require a thicker head gasket and once a proper fuel trim tune is set, you will notice an increase in power total.
2009 Cobalt LS XFE U74
Mods: K&N Typhoon Intake, Option Cat-Back Exhaust, Cosmo Short shifter, Maxxim Ahead 17X7's, MPx shorty antenna, FE5 Strut/shocks, Tein S Techs, Moog endlinks, Moog spring seaters, ZZP shorty header, LSJ downpipe, LNF front grille