Every good stud uses rolled threads, from a sohc4 all the way to a 6000hp top fuel dragster. If they dont its inferior.
Seen head stud arguments all over the internet, especially in High boost Diesels. I have heard both sides of arguments that the ford originals are better and designed to stretch, and using ARP head studs that have less stretch tend to crack cylinder heads.
Experience can vary wildly, I always look at all scenarios to see if things varied, and if that was the cause of the failure.
The use of a torque lubricant, like ARP's will give much better consistent torque readings than dry, and also takes less torque to get the same result, which also keeps the studs happier, because it puts less stress on the studs.
I used the ARP lube when i built my 347 for my mustang, and it had 15,000 hard miles on it, and I never had to retorque a bolt or stud, and probably still hasnt after i sold the car.
