Corroded header bolts

[Synner]

Originally Posted by Badbubba

Loctite's Threadlocker Blue 242 instructions state: for removal of bolt's between 1/4 & 3/4 use standard hand tools and apply heat if the bolts are hard to remove. Operating temp is between -65F to 300F. Heat to 482F to aid in removal.
I'm not sure of the temp in this area. But if it is high enough, I would think the threadlocker may not have much affect. Although it may prevent galling. http://www.loctiteproducts.com/p/t_l...r-Blue-242.htm
Could GM have used a high temp threadlocker? I plan on installing headers in the spring and would like to know what is the best product to use? Threadlocker or anti-seize.

Antiseize. There is a high temp thread locker but your issue is dissimilar metals not the bolt backing out. Torque it to spec, drive it for a couple heat cycles, torque it to spec. Or you can buy locking bolts but still cover them with antiseize.