i sent my head to bill gude for the racing package. the package will raise the cr from 9.2.1 to 11.1.1 will i have any problems with this cr in the summer with the heat. i live in the northeast we use 93 and 94 octain. also the head is using 9000 rpm valve springs what is the maximum redline on a factory bottom ls with 60 000 miles. I say no mare than 8500???????? please help with the cr question !!!!!!!!!!!! thanks