Sorry to derail the thread, but lube most definitely changes the preload to torque relationship. Depending on the lube, you can change the preload by a factor of 5 or more when you go from dry threads to lubed threads. So if you want the same preload as you had with dry threads, you'd need to lower the applied torque accordingly.



Lubricated Bolts and Reduced Torque

You are correct that lube makes torque to preload relationship more consistent, which is why the more critical fasteners (head bolts, connecting rod bolts) specify torque for lubed threads. But that relationship will be completely different than for dry threads.

Having said that, it is possible that the acceptable preload range is insensitive enough to this variation for the intake bolts. But I would not lube the threads and apply the same torque as for dry, I'd cut it down to at least half.