Right, with a cam on those LS6 springs. Its all part of the load against the chain that causes it to stretch. Now, I am not talking about it breaking, or even cause problems. It will eventually make a lot of noise, which is bad but thats past 50k miles. Also 50k is not every instance, some are less, some more. Most we will never actually know because it just moves the powerband higher (killing some low end torque, which is how you notice mostly).
Cryotreating should help, as it does on just about everything involved wear. Especially for cylinder walls and brake rotors
I expect Jon's setup to work for a long time with the 94-99 crytreated chain.
I do my best to help everyone, customers and enthusiasts alike. Wish I had time to work on 60v6 but I am hoping this next year working with a partner will allow me to get some articles/instructions written.