i have two different heads, an 11 and a 14. the numbers are on the front or rear (cant remember exactly) right below the cam journals on the exterior of the cylinder head. both of my heads use have the short divider in them.
i have seen a few other heads and to my knowledge, there has been no rhyme or reason linking the casting #'s to different head types. nor have i seen much difference in performance, numbers wise in any of my research.
far as i know, any 7m head will work, and shouldnt pose a problem.
__________________
87 toyota 4x4 single cab short box pickup, 7MGZE.
|