Cometic MLS + o-ring/Best HG setup for Extreme cylinder pressures

[Phil99vette]

I saw a post from 2003 where the topic was cometic + copper o-ringed block or heads. Does anyone run this combo or have any experience with it? I've heard that the MLS gasket + copper o-ring will handle some extreme cylinder pressure.
Phil

 

[Nick Micale]

Your info is a little mixed up?

If you want to o-ring for max holding, the heads and block need preped and machined for use with a copper gasket.

You are getting into a very expensive race-built engine at that level.