This is a late 36 37 head that we received for repairs this week. The rear head is pretty nice, and the front head is in amazing condition. It has never been converted to run covers. 36 and 37 ohvs had open rocker motors. Go to www.youtube.com/gosonytv to see some videos of open rocker heads in action. Anyways this head is amazing!
It looks like a fin is missing, but it is cast like that, so that the return line on the baby food jar has clearance to route back to the rocker box.
Check it out!!!!
36 and 37 heads have this little y stamped in the intake port. It is a cool deal. The only problem with this head is a crack up the exhaust port, which is a pretty common deal.