I need to know what size of Brakes were originally on a 1927 Model TT ford
The TT rear brake drums measure 12" diameter.
The brake shoes are 2" wide.
Josh,
Dan's answer is correct.
If I'm telling you something you already know - just ignore me. Factory TT braking was designed just like the regular T's. They relied on the transmission brake as the service brake. The rear drums, although bigger on a TT, were primarily for parking and emergencies. The rear drums were used as a service brake when an outside after-market auxiliary brake package was installed.
Josh I tried to email you won't go, I have the brake shoes, linings and rivets you need email me danuser88@ktis.net