4k rpm ?s

[j-rod]

Hey guys,

As you can see, I am a newbie on this site, but I have been on other online forums for a few years now.

I am wondering what mods would be required to safely run 4k rpm? I've been told stiffer valve springs, and I also would need a box that could fuel to that rpm.

What do you think?

 

[LAmiller]

springs and retainers are a must, and a cam to carry your peak power further through you high RPM's