Which is better for high boost LS3 Hollow Stem valves or L99 valves ?
#1
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
I'm collecting parts for my engine which will see almost 20 psi of boost and want to know which is better for high boost LS3 Hollow Stem valves or L99 valves ?
Thanks in advance
Thanks in advance