whats up guys..imma turbo guy but i figured you guys would know the answer quick..lol.

i want to increase my redline from stock to 9-9500 rpms, what would i have to replace on the head to do this...i have a stock ITR head right now on my GSR block with forged pistons and rods.

thanks

 

Valves, springs, retainers, locks to start...

 

what are most all motor heads rolling with for valves, springs, and retainers and locks...

 

i've got jun springs and retainers and type r valves and don't seem to have any problems revvin to 9200 everyday

 

so i can run jun springs and retainers with my typeR head and i will be able to rev 9K safely? also where did you order them from and how much did they run

 

why do you want to rev to this point? RPM's stand for Ruin People's Motors. And if this is on a turbo car there is absolutely no need. GSR cams, the popular turbo cam of choice are good only to 8200 or so and they are done. If you have ITR cams they stop brething right around 8500-8600. Anything past that is just killing your internals for no benefit. Doens't make a lot of sense to me. But upgrading springs and retainers to something like portflow or JG or alaniz would be nice just for added security against a misshift. JUN springs are nice but only use those with their cams. No need spending the money for them unless you have their bumpsticks and on that note. up we go