Here is what I have....bone stock head from a 1994 Dodge Shadow. It has cracks between every set of valves and a groove cut between two cylinders due to a blown head gasket. The groove will be repaired as will the cracks , new valve guides, and a valve job. The question I have is...when I have the head repaired I will have them take off .040...any ideas on what the old compression was and what the new one will be. The motor is an efi one, not turbo.