So, I have a few questions about the 5.4 and its compression. I know the stock N/A compression is about 9:1 roughly. I've read that guys who boost up will start with a 8.5:1 or so to get up to around 11:1 (correct me if I'm wrong about any of this).

My main question is, what is the highest ratio the block has been tested to? This is just a theory question, I'm not looking to ruin one of these. I know that the gas is the concern to keep a lower compression ratio because you don't want detonation. For the sake this post, ignore the concerns of detonation if possible.

The weak point of them is the head, of course. The gaskets will blow out at a certain point, but what could be done to prevent that? Tighten down the heads further? Also, the studs aren't meant to hold but so much, so could they be replaced to hold a higher torque value to support a higher compression ratio?

I appreciate anything you could tell me, any high compression build links, the like.

Thanks