i have a fully built block, dfi, and a big turbo... is it safe to leave my head stock or am i risking dropping or floating a valve? i have itr valvesprings and cams... everything else is stock on a gsr head... iv revved it passed 9k many times before but without as much power as ill be pushing now... if i leave the rev's under lets say 8500 should i be good for a few months before i do the head?

 

you should be just fine to 8900 rpms no matter what turbo and boost.

 

only thing i have to be careful of is not to over-rev it... that thing revs up to 9k so fast u dont even notice it!

 

That is so true, 9 grand goes in a blink