Intake manifold torque

I have probaly pulled the intake on my Magnum about a dozen times for head, cam, and intake swaps. Ive used the same original OEM bolts everytime and I have never torqued them. I snug all of them up in a criss cross pattern, and hand tighten them in the same pattern.

It is marked on the stock intake that the torque spec is 12 FT/LBS. I dont know where some of this other info is coming from. Ive also heard people say that they are TTY bolts. I dont see how 12 Ft/Lbs could stretch those bolts.