I recently received a Model T with a Gemsa Power Head. And I'm having a hard time finding much information on these heads like the torque specs.
You can't go far wrong with this:
Welcome to the madness. What car is this head going in/on?
It's already on a 1914 T. But being new to the T culture with the advance/retard, jet adjustment (it has a model a carb) and a dristributor off a willies jeep, it's a interesting experience.