340/360 Heads on a 318

dodgetkboy78 said

Are they closed chamber too? I have never got my hands on a set, my 67 LA truck motors had open chamber heads. I heard somewhere they were closed chamber, and had lots of meat for porting.

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Yes they are closed chamber, shaped like closed chambered big block heads but with the angled plug [better], BTW they use a weird big ford thread 5/8 and the plugs that I ended up using [cold] came listed for a like a sb motor home??

They are on the 318 340cam performer intake /carb still, so I pulled a valve cover and took a pick of the #'s, all letters/#'s are BIG as cast.