Hi

I was going to use genuine Mopar steel shim head gaskets with the 906 cast iron heads and applying a coat of copper spray to the gaskets before the installation.

I haven't used steel shim gaskets since the early 80's and have since that preferred Permatorque or MLS type gaskets. Using the steel shims would give a little higher compression ratio.

Should I retorque the heads, if I use the steel shim gaskets???