When you buy ARP head stud kit the recommended torque value given is super high at 38 foot pounds.
I'd never do 38 (did 28) but I wanted a reason why they recommend so much higher than the factory 24.3 ft lbs.
I understand it's a different bolt but that's a big jump. At operating temperature our motors grow about 2.5mm btwn camshafts. That is like tightening the head stud nuts another 180 degrees.
Here are my emails to Jay at ARP who is in R&D. I would not do 38.
