250 head on a 200ci

[rt67stang]

Hey guys,
I finally fixed my last problem of not having spark, but when i pulled the spark plugs out they were oil soaked. Seems like a bad piston ring. So im gunna just rebuild the original 200ci, but its not going back to stock . I heard of people putting 250ci heads on a 200ci but not sure how. Do you have to do anything to the block to get it to fit or will the 250ci head bolt up to the 67 200ci head.
Thanks, Ronny

 

[JackFish]

The 200 and the 250 share the same head. They are the same.
The block on the 250 is an inch taller, so block parts are different.

Your valve stem seals are probably dried out.
Is it all of them?

 

[rocklord]

Had a 250 in my first 65 Mustang that kept fouling plugs with oil. The next owner of the engine replaced the valve seals and ran it with no fouling.

Unless you just want to rebuild the 200 for performance, have the valve seal replaced.