Hey guys, ive built plenty of Gen III stuff and cathedral port setups.. but this is my first square port Gen IV build.. I just had a custom cam spec'd and i wanted something reliable for many many miles. I ended up getting a 224/234 .598/.598 VVT cam... normally i would be ok with a .625 918 comp of similar beehive but since the valves are much heavier in this L92 head should i go with a big dual spring setup or will a beehive be plenty for what i need. Shift points will be setup at 6400.

Thanks

 

I would probably go with a dual to be safe, but I bet PSI or PAC 1518's would be fine.

 

I had 20k+ miles on lunati .660 springs. Turned them 7500 with stock valves.