So here's the deal. I'm bolting on a set of 243's with patroit dual gold springs, 7.400 push rods, and LG's G5x1"e" cam 228/232 with around little over .600+ lift. My question is will the stock sodium valves handle the pressure or should I just dish out more money and buy a one piece valve. All info and opinions PLEASE!

 

ive never heard of a lightweight valve failure. when the valve is fully open, all the pressure is between the grooves on the stem of the valve and the ridges of the keepers, it's a vertical shearing force. i believe the hollow portion of the valve stops below that point anyway.