Found a guy who claims to have one out of a 68 GTO. The casting #16 is only on 1 exhaust port. Not 1 # on each ctr port like i'm used to seeing. Could this be the small vlv hds? Did the small vlv hds have pressed in, or screw in studs?
He's goimg to pull a vlv cvr and check. Also get me the engine serial #, date code, intake #(4-bl), and dist #. No carb.
