Thinking about trying a set of these on my new 427 I'm building. They have some great sounding features like the stainless rings around the combustion chambers and seals around oil and water passages. Plus they are copper.

I have had good success with GM MLS gaskets but now need a 6 bolt/cylinder gasket.

Anyone here running them? Are they good or bad?

 

Just did a Google search and found nothing but bad on these. Looks like Cometic is gonna be my only answer.

 

Never heard of them before...I would stick with Cometic

 

You would have to o-ring your heads and block to use those.

Lonnie