How hot can aluminum heads get before they warp?

[Stang_ROTY]

But where was the info in my box from Summit for such a drastic modification? I spent 8 months putting this car together and I did a lot of research into what I bought. I don't mean to sound like an A$$hole but I've spent too much time on the phone with tech's from Edelbrock, Summit, and FRPP to have not heard about this. I can't imagine how many dents I'd kick in the car if I have to yank that damn engine back out for the 11th time. Basically, I've come too far to go backwards. If I need to disassemble the engine I'm done with this project. I'll sell everything.