why is it that the oval port big chief style heads come with copper seats.
badbug3 · Registered Joined Dec 24, 2008 · 157 Posts Discussion Starter • #1 • Feb 1, 2011 why is it that the oval port big chief style heads come with copper seats.
G Greg2 · Registered Joined Jun 13, 2005 · 21,313 Posts #2 • Feb 1, 2011 They're easier on titanium valves which a lot of people run.
