I'm about to put my heads back on and wondering if there's a cheaper alternative to cometics for my application. Running 16+ PSI with stock castings and I'm aware of the potential to lift heads so I didn't skimp on gaskets last time. I need the following specs and the advantage of cometic is the ability to have them custom made but wondering if there's anything generic that will work.

LS1
4.070 bore so 4.100 or so gasket
somewhere around .050 thickness

 

umm stock mls?

 

right but the bore size was my concern

 

Use the GM 6.0/6.2L MLS head gaskets 12610046. They are 5 layer. I mic'd them out with the set I have.
Gasket thickness = .051"
Gasket bore size = 4.100"

 

new ls9s are 7 layer

 

GM mls.

 

Sounds good they seem to be holding up to lots of boost?